-
What Does The Octane Rating Of Gasoline Mean?
To understand the concept of octane rating, we look at how gasoline is made and at how a car engine works.
At the end of the day, please refer to your car owner's manual or your manufacturer to find the best octane rating for your specific car.
If you enjoyed the video, please like, share, and subscribe!
Like Everyday Elements on Facebook: https://www.facebook.com/EverydayElements12/
published: 27 Jul 2016
-
Who's Got Better Fuel? Octane Ratings Explained and Mythbusted
So what is the octane rating of fuel? The octane rating of fuel is actually an indicator of just one single thing and that is the fuel’s ability to resist detonation or knock. That’s it. The octane number has nothing to do with the energy content of fuel nor it’s impact on the power output of the engine.
The octane rating is also only relevant for gasoline engines because gasoline engines compress air and fuel together and then ignite the compressed mixture using a spark plug. When we compress air we we bring the air molecules closer together causing them to bump against each other more which then increases the temperature of air. And if we compress it enough to raise the temperature enough this can then lead to the spontaneous ignition of the air fuel mixture which is independent of the ...
published: 12 Jun 2022
-
Organic Chemistry - Ch 1: Basic Concepts (7 of 97) What is the Octane Rating?
Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain what is the octane rating. RON (research octane number) indicates the resistance to ignition as a result of compression (heat), reducing the knocking. More RON – greater resistance to knocking. Less RON – lower resistance to knocking.
Next video in this series can be seen at:
https://youtu.be/u8t5c0zh80g
published: 22 Feb 2017
-
Octane Ratings Explained - EricTheCarGuy
I know it has been a while but better late than never. I recently had a conversation with someone who wanted to know why octane ratings were important and what they meant, I thought this would make a perfect video for ETCG and here we are. So in this video we go over the 4 parts of the 4 stroke cycle in a gasoline engine and how it is effected by octane. I like this video because it is a window into the direction I see these videos going in the future, more dynamic and more thought out. I hope you enjoy it and find it informative.
Special thanks to Ford Motor Company for the use of their animation in this video. I did add some stuff of my own by the way, thanks guys.
---
Click below and Stay Dirty
Visit me at EricTheCarGuy.com
http://ericthecarguy.com/
Visit EricTheCarGuy Forum...
published: 03 May 2009
-
The truth about octane rating: Should you run high octane fuel? | Auto Expert John Cadogan
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
OLIGHT DISCOUNT (these are awesome)
VISIT https://bit.ly/3zF5hCQ
12% off: Use code AEJC on checkout
Get 240-volt power off-grid @ Bluetti portable power: https://www.bluettipower.com.au/?ref=8xzu1i8qk8
Help support my independent reporting, securely, via Patreon: https://www.patreon.com/user?u=54778969
Podcast (audio-only version, for listening in the car, etc.): https://anchor.fm/autoexpert
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
AutoExpert discount roadside assistance package:
https://247roadservices.com.au/autoexpert/
Did you like this report? You can help support the channel, securely via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_bu...
published: 04 Nov 2022
-
What Is Octane Rating? Premium vs Regular Gas
What's the difference between premium and regular fuel? What does that octane rating number represent? This video explains why cars with higher compression ratios need high octane fuels.
Please feel free to rate, comment, and subscribe!
And don't forget to check out my Facebook page:
http://www.facebook.com/engineeringexplained
Also check out my official website: Make suggestions, participate in forums, enter for Car of the Month, learn through logically ordered lessons, read FAQs, and plan your future!
http://www.howdoesacarwork.com
NEW VIDEOS EVERY WEDNESDAY!
published: 30 Sep 2011
-
Top 10 facts about octane rating every car owner should know | Auto Expert John Cadogan
Coming up - the top 10 things you need to know about octane rating.
Number one with a bullet: Never use a fuel with an octane rating lower than the carmaker recommends. That’s a great way to damage your engine. Going higher than the minimum octane the manufacturer recommends is quite OK. But it will cost you more money.
Two: Octane rating has nothing to do with more energy, intrinsically. Ethanol blended fuels pump up the octane, but they actually have less energy than low-octane gasoline. The two things are unrelated.
Three: Octane has nothing to do with the speed of combustion, or the heat of combustion. These are two things that scientifically illiterate halfwits claim all the time. Simply not true.
Four: Octane rating is all about knock resistance. It’s about burning in a controlle...
published: 19 Jan 2019
-
I-Octane - No Ratings (Official Video)
I-Octane presents the official video for "No Ratings"
Connect with I-Octane:
https://www.instagram.com/realioctane/
Produced by Mari Muziq Records - @marimuziq
Directed by KingPride Productions
#IOctane #NoRatings
http://vevo.ly/UqJiqC
published: 03 Mar 2023
-
What is the BEST Fuel to Use in Your Car or Truck and WHY
Ever wonder what grade gasoline should you use in your car (what octane)? Are you paying for premium gas when you can just use regular? Are you using regular and damaging your engine? This video will bust all of the myths and tell you the FACTS on what fuel you should use and why.
Many people throw money away and fill their car with the incorrect fuel every day. Running premium or midgrade in a car designed to run regular is a waste of money and has no HP or MPG benefits. You will not make more power or get better fuel economy running premium fuel if the car manufacturer tunes the car to use regular gas in most cases. I also see some people run regular gas in cars that need premium and the knock sensors have to adjust timing significantly to prevent damaging engine knock. I also hear a lo...
published: 15 Oct 2019
-
PD Simplified | Fuel Octane : What Should You Use?
Petrol comes in various octane ratings. Regular petrol is Octane 91, but there are more expensive blends that can be Octane 95, 97, or even 100. However, the higher the octane count, the more expensive petrol gets. So which one do you really need? The answer lies, not in this video, but in your vehicle’s user manual. Be sure to check it to see what octane rating your vehicle needs. Most vehicles sold in India will run just fine on regular pump gas. However, if you have a car/bike with a high compression ratio, it could benefit from an octane rich petrol. In this episode, Shumi simplifies fuel octane ratings and which one should you really use.
#PowerDrift
Join the 2 Million strong #PDArmy : http://bit.ly/PDARMY
Stay updated with News, Behind the Scenes here : https://www.instagram.com/po...
published: 27 Nov 2021
3:07
What Does The Octane Rating Of Gasoline Mean?
To understand the concept of octane rating, we look at how gasoline is made and at how a car engine works.
At the end of the day, please refer to your car own...
To understand the concept of octane rating, we look at how gasoline is made and at how a car engine works.
At the end of the day, please refer to your car owner's manual or your manufacturer to find the best octane rating for your specific car.
If you enjoyed the video, please like, share, and subscribe!
Like Everyday Elements on Facebook: https://www.facebook.com/EverydayElements12/
https://wn.com/What_Does_The_Octane_Rating_Of_Gasoline_Mean
To understand the concept of octane rating, we look at how gasoline is made and at how a car engine works.
At the end of the day, please refer to your car owner's manual or your manufacturer to find the best octane rating for your specific car.
If you enjoyed the video, please like, share, and subscribe!
Like Everyday Elements on Facebook: https://www.facebook.com/EverydayElements12/
- published: 27 Jul 2016
- views: 174504
10:27
Who's Got Better Fuel? Octane Ratings Explained and Mythbusted
So what is the octane rating of fuel? The octane rating of fuel is actually an indicator of just one single thing and that is the fuel’s ability to resist deton...
So what is the octane rating of fuel? The octane rating of fuel is actually an indicator of just one single thing and that is the fuel’s ability to resist detonation or knock. That’s it. The octane number has nothing to do with the energy content of fuel nor it’s impact on the power output of the engine.
The octane rating is also only relevant for gasoline engines because gasoline engines compress air and fuel together and then ignite the compressed mixture using a spark plug. When we compress air we we bring the air molecules closer together causing them to bump against each other more which then increases the temperature of air. And if we compress it enough to raise the temperature enough this can then lead to the spontaneous ignition of the air fuel mixture which is independent of the action of the spark plug. This spontaneous ignition of the air fuel mixture is also known as detonation or knock. It’s an uncontrolled event which can damage the engine if it’s strong enough or persists long enough and hence must be avoided.
So if your engine requires let’s say regular 87 octane fuel and you put in premium 94 octane in it simply means that you’ve increased the knock resistance of the fuel inside your engine. but this does nothing because your engine is designed for 87 octane and wasn’t knocking in the first place. In other words you’re increasing protection against a non-existant risk. The only time when a higher octane might have helped is if there was something actually wrong with your engine which was causing it to knock. Your ecu detects the knock through the knock sensor and then retards ignition timing to stop the knocking which reduces engine performance. You then pour in the premium fuel which prevents the knocking and your ECU restores normal timing. In this case the higher octane fuel didn’t give you any additional performance but only restored original performance by acting as a band-aid fix for the fault inside your engine. In fact on most modern engines this scenario is impossible because knocking would trigger a check engine light or even limp-mode and engine performance could not be restored without resetting the codes regardless of the fuel you put into the engine. The reality of things is that putting in high octane fuel in a normally operating engine that doesn’t need high octane fuel actually reduces the performance of that engine. And this is because a higher octane number doesn’t just increase knock resistance, it also usually leads to a lower flame speed of the combustion and this can lead to reduced performance.
Now diesel engines don’t have spark plugs and they only compress air which means that the octane rating is irrelevant for diesels. Diesel engines introduce fuel into the combustion chamber only when the air has been compressed sufficiently to be hot enough to ignite the fuel. This is why the tendency to self-ignite under heat and pressure is actually desirable for diesel fuels and the reason why they use a completely different rating called the Cetane number which measures this.
So how is the octane number of fuel even measured? Well it’s measured using a special machine which is essentially a little single cylinder four stroke engine, as you can see here’s the cylinder and here we have the valve springs, but what makes it different from real engines is that it has a variable compression ratio.
The compression ratio of the engine is the ratio between the largest and the smallest volume of the cylinder, in order words it’s the ratio between the total cylinder volume when the piston is at bottom dead center and when it is at top dead center. The compression ratio of an engine is fixed and can’t be changed when the engine is running. To change it you have to take the engine apart and make mechanical changes to it’s internals to change the compression ratio. For example installing a piston with a large dome is going to decrease both the smallest and the largest cylinder volume leading to an increased compression ratio.
The higher the compression ratio the more we compress and heat up the air fuel mixture leading to higher chances of knock. This is why high compression ratio gasoline engines need higher octane fuels. Another important factor is the presence of forced induction. A turbo or supercharger also compresses the air and pushes it into the engine which means that forced induction also contributes to increased air temperatures and increased chances for knock.
So the compression ratio of a real engine is fixed but it’s not fixed for our octane rating test engine. Older versions of these machines featured a manual handle which raises or lowers the height of the cylinder head thus changing the compression ratio of the engine while it’s in operation.
A special thank you to my patrons:
Daniel
Daniel Morgan
Pepe
Brian Alvarez
Jack H
Dave Westwood
Joe C
Zwoa Meda Beda
Toma Marini
Nelson
#d4a #octane #gasoline
https://wn.com/Who's_Got_Better_Fuel_Octane_Ratings_Explained_And_Mythbusted
So what is the octane rating of fuel? The octane rating of fuel is actually an indicator of just one single thing and that is the fuel’s ability to resist detonation or knock. That’s it. The octane number has nothing to do with the energy content of fuel nor it’s impact on the power output of the engine.
The octane rating is also only relevant for gasoline engines because gasoline engines compress air and fuel together and then ignite the compressed mixture using a spark plug. When we compress air we we bring the air molecules closer together causing them to bump against each other more which then increases the temperature of air. And if we compress it enough to raise the temperature enough this can then lead to the spontaneous ignition of the air fuel mixture which is independent of the action of the spark plug. This spontaneous ignition of the air fuel mixture is also known as detonation or knock. It’s an uncontrolled event which can damage the engine if it’s strong enough or persists long enough and hence must be avoided.
So if your engine requires let’s say regular 87 octane fuel and you put in premium 94 octane in it simply means that you’ve increased the knock resistance of the fuel inside your engine. but this does nothing because your engine is designed for 87 octane and wasn’t knocking in the first place. In other words you’re increasing protection against a non-existant risk. The only time when a higher octane might have helped is if there was something actually wrong with your engine which was causing it to knock. Your ecu detects the knock through the knock sensor and then retards ignition timing to stop the knocking which reduces engine performance. You then pour in the premium fuel which prevents the knocking and your ECU restores normal timing. In this case the higher octane fuel didn’t give you any additional performance but only restored original performance by acting as a band-aid fix for the fault inside your engine. In fact on most modern engines this scenario is impossible because knocking would trigger a check engine light or even limp-mode and engine performance could not be restored without resetting the codes regardless of the fuel you put into the engine. The reality of things is that putting in high octane fuel in a normally operating engine that doesn’t need high octane fuel actually reduces the performance of that engine. And this is because a higher octane number doesn’t just increase knock resistance, it also usually leads to a lower flame speed of the combustion and this can lead to reduced performance.
Now diesel engines don’t have spark plugs and they only compress air which means that the octane rating is irrelevant for diesels. Diesel engines introduce fuel into the combustion chamber only when the air has been compressed sufficiently to be hot enough to ignite the fuel. This is why the tendency to self-ignite under heat and pressure is actually desirable for diesel fuels and the reason why they use a completely different rating called the Cetane number which measures this.
So how is the octane number of fuel even measured? Well it’s measured using a special machine which is essentially a little single cylinder four stroke engine, as you can see here’s the cylinder and here we have the valve springs, but what makes it different from real engines is that it has a variable compression ratio.
The compression ratio of the engine is the ratio between the largest and the smallest volume of the cylinder, in order words it’s the ratio between the total cylinder volume when the piston is at bottom dead center and when it is at top dead center. The compression ratio of an engine is fixed and can’t be changed when the engine is running. To change it you have to take the engine apart and make mechanical changes to it’s internals to change the compression ratio. For example installing a piston with a large dome is going to decrease both the smallest and the largest cylinder volume leading to an increased compression ratio.
The higher the compression ratio the more we compress and heat up the air fuel mixture leading to higher chances of knock. This is why high compression ratio gasoline engines need higher octane fuels. Another important factor is the presence of forced induction. A turbo or supercharger also compresses the air and pushes it into the engine which means that forced induction also contributes to increased air temperatures and increased chances for knock.
So the compression ratio of a real engine is fixed but it’s not fixed for our octane rating test engine. Older versions of these machines featured a manual handle which raises or lowers the height of the cylinder head thus changing the compression ratio of the engine while it’s in operation.
A special thank you to my patrons:
Daniel
Daniel Morgan
Pepe
Brian Alvarez
Jack H
Dave Westwood
Joe C
Zwoa Meda Beda
Toma Marini
Nelson
#d4a #octane #gasoline
- published: 12 Jun 2022
- views: 272888
4:52
Organic Chemistry - Ch 1: Basic Concepts (7 of 97) What is the Octane Rating?
Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain what is the octane rating. RON (research octane number) indica...
Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain what is the octane rating. RON (research octane number) indicates the resistance to ignition as a result of compression (heat), reducing the knocking. More RON – greater resistance to knocking. Less RON – lower resistance to knocking.
Next video in this series can be seen at:
https://youtu.be/u8t5c0zh80g
https://wn.com/Organic_Chemistry_Ch_1_Basic_Concepts_(7_Of_97)_What_Is_The_Octane_Rating
Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain what is the octane rating. RON (research octane number) indicates the resistance to ignition as a result of compression (heat), reducing the knocking. More RON – greater resistance to knocking. Less RON – lower resistance to knocking.
Next video in this series can be seen at:
https://youtu.be/u8t5c0zh80g
- published: 22 Feb 2017
- views: 6087
7:52
Octane Ratings Explained - EricTheCarGuy
I know it has been a while but better late than never. I recently had a conversation with someone who wanted to know why octane ratings were important and what...
I know it has been a while but better late than never. I recently had a conversation with someone who wanted to know why octane ratings were important and what they meant, I thought this would make a perfect video for ETCG and here we are. So in this video we go over the 4 parts of the 4 stroke cycle in a gasoline engine and how it is effected by octane. I like this video because it is a window into the direction I see these videos going in the future, more dynamic and more thought out. I hope you enjoy it and find it informative.
Special thanks to Ford Motor Company for the use of their animation in this video. I did add some stuff of my own by the way, thanks guys.
---
Click below and Stay Dirty
Visit me at EricTheCarGuy.com
http://ericthecarguy.com/
Visit EricTheCarGuy Forum
http://www.ericthecarguy.com/forum/default.aspx
Visit my Facebook Page:
http://www.facebook.com/EricTheCarGuy
---
BTW Keep checking back with EricTheCarGuy.com, in the not too distant future I will be updating the site and making more in dept videos available for purchase. See my blog for details.
http://ericthecarguy.blogspot.com/
As always thanks for watching, be safe, and stay dirty.
ETCG
https://wn.com/Octane_Ratings_Explained_Ericthecarguy
I know it has been a while but better late than never. I recently had a conversation with someone who wanted to know why octane ratings were important and what they meant, I thought this would make a perfect video for ETCG and here we are. So in this video we go over the 4 parts of the 4 stroke cycle in a gasoline engine and how it is effected by octane. I like this video because it is a window into the direction I see these videos going in the future, more dynamic and more thought out. I hope you enjoy it and find it informative.
Special thanks to Ford Motor Company for the use of their animation in this video. I did add some stuff of my own by the way, thanks guys.
---
Click below and Stay Dirty
Visit me at EricTheCarGuy.com
http://ericthecarguy.com/
Visit EricTheCarGuy Forum
http://www.ericthecarguy.com/forum/default.aspx
Visit my Facebook Page:
http://www.facebook.com/EricTheCarGuy
---
BTW Keep checking back with EricTheCarGuy.com, in the not too distant future I will be updating the site and making more in dept videos available for purchase. See my blog for details.
http://ericthecarguy.blogspot.com/
As always thanks for watching, be safe, and stay dirty.
ETCG
- published: 03 May 2009
- views: 463625
11:53
The truth about octane rating: Should you run high octane fuel? | Auto Expert John Cadogan
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
OLIGHT DISCOUNT (these are awesome)
VISIT https://bit.ly/3zF5hCQ
12% off: Use...
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
OLIGHT DISCOUNT (these are awesome)
VISIT https://bit.ly/3zF5hCQ
12% off: Use code AEJC on checkout
Get 240-volt power off-grid @ Bluetti portable power: https://www.bluettipower.com.au/?ref=8xzu1i8qk8
Help support my independent reporting, securely, via Patreon: https://www.patreon.com/user?u=54778969
Podcast (audio-only version, for listening in the car, etc.): https://anchor.fm/autoexpert
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
AutoExpert discount roadside assistance package:
https://247roadservices.com.au/autoexpert/
Did you like this report? You can help support the channel, securely via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=DSL9A3MWEMNBW&source=url
https://wn.com/The_Truth_About_Octane_Rating_Should_You_Run_High_Octane_Fuel_|_Auto_Expert_John_Cadogan
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
OLIGHT DISCOUNT (these are awesome)
VISIT https://bit.ly/3zF5hCQ
12% off: Use code AEJC on checkout
Get 240-volt power off-grid @ Bluetti portable power: https://www.bluettipower.com.au/?ref=8xzu1i8qk8
Help support my independent reporting, securely, via Patreon: https://www.patreon.com/user?u=54778969
Podcast (audio-only version, for listening in the car, etc.): https://anchor.fm/autoexpert
Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact
AutoExpert discount roadside assistance package:
https://247roadservices.com.au/autoexpert/
Did you like this report? You can help support the channel, securely via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=DSL9A3MWEMNBW&source=url
- published: 04 Nov 2022
- views: 66890
2:44
What Is Octane Rating? Premium vs Regular Gas
What's the difference between premium and regular fuel? What does that octane rating number represent? This video explains why cars with higher compression rati...
What's the difference between premium and regular fuel? What does that octane rating number represent? This video explains why cars with higher compression ratios need high octane fuels.
Please feel free to rate, comment, and subscribe!
And don't forget to check out my Facebook page:
http://www.facebook.com/engineeringexplained
Also check out my official website: Make suggestions, participate in forums, enter for Car of the Month, learn through logically ordered lessons, read FAQs, and plan your future!
http://www.howdoesacarwork.com
NEW VIDEOS EVERY WEDNESDAY!
https://wn.com/What_Is_Octane_Rating_Premium_Vs_Regular_Gas
What's the difference between premium and regular fuel? What does that octane rating number represent? This video explains why cars with higher compression ratios need high octane fuels.
Please feel free to rate, comment, and subscribe!
And don't forget to check out my Facebook page:
http://www.facebook.com/engineeringexplained
Also check out my official website: Make suggestions, participate in forums, enter for Car of the Month, learn through logically ordered lessons, read FAQs, and plan your future!
http://www.howdoesacarwork.com
NEW VIDEOS EVERY WEDNESDAY!
- published: 30 Sep 2011
- views: 260119
7:15
Top 10 facts about octane rating every car owner should know | Auto Expert John Cadogan
Coming up - the top 10 things you need to know about octane rating.
Number one with a bullet: Never use a fuel with an octane rating lower than the carmaker re...
Coming up - the top 10 things you need to know about octane rating.
Number one with a bullet: Never use a fuel with an octane rating lower than the carmaker recommends. That’s a great way to damage your engine. Going higher than the minimum octane the manufacturer recommends is quite OK. But it will cost you more money.
Two: Octane rating has nothing to do with more energy, intrinsically. Ethanol blended fuels pump up the octane, but they actually have less energy than low-octane gasoline. The two things are unrelated.
Three: Octane has nothing to do with the speed of combustion, or the heat of combustion. These are two things that scientifically illiterate halfwits claim all the time. Simply not true.
Four: Octane rating is all about knock resistance. It’s about burning in a controlled way under pressure, while hot.
High octane fuels simply resist autoignition better than low octane fuels. Autoignition - which is the fuel burning thanks to the heat and compression in the chamber - before the spark plug fires - causes knock. Which destroys engines at high rpm and big throttle inputs. That’s bad.
Five: If an engine is optimised for high octane fuel the designers can increase compression and add ignition advance, because the fuel is more resistant to autoignition. And it’s these two things that lead to a peak power increasefor engines optimised for high octane fuel.
Six: If you use high octane fuel in an engine designed for low octane fuel, the engine will adapt up, slightly. The knock sensor will allow a small increase in ignition advance and there will be a slight increase in power. Slight.
Certainly not as much as there would be if they increased the compression ratio.
Seven: Here in Shitsville, it’s almost never economically rational to use premium fuel in a car designed for regular. The extra cost of the premium fuel is, in practice, never offset by the slight increase in economy. You’re just blowing money out the exhaust pipe unnecessarily.
Eight: And that’s why fuel manufacturers talk up the alleged ancillary benefits of premium - such as the spurious claim that premium will also keep your engine clean. And if you believe that, I’ll sell you the Shitsville Harbour Bridge. DM me. It’s such bullshit. They’re not promoting premium because it’s a benefit to you - they’re promoting it because it’s a benefit to them.
Nine: If you’re reading owner’s manuals from overseas, bear in mind that octane ratings are not constant around the world. Here in Arse-trailer, we use ‘research octane number’ or RON. Same standard in most of Europe.
But in North America they use the Anti-knock index, which is the numeric average of the RON and another octane measurement standard called the Motor Octane Number.
Essentially, for any given fuel, RON is about four points higher than the Anti Knock Index. So 91 here - our entry-level cat’s piss petrol - is about the same as 87 gasoline in the USA and Canada.
And if you’re wondering why so many Euro cars demand 95 here in Shitsville, it’s because 95 is the default, entry-level cat’s piss in Europe. They don’t do 91.
Finally, number 10: Time to go 100 per cent propeller-head. Octane rating is an index of the knock resistance of a particular fuel compared to a laboratory standard kind of fuel called iso-octane. Which is actually 2,2,4 tri-methyl pentane - for those of you who remained awake for carbon chemistry in high school.
Iso-octane has an octane rating of 100, and another chemical - n-heptane has a rating of zero. There’s your measurement scale.
So, essentially, 91 RON unleaded has 91 per cent of the knock resistance of iso-octane when you run the test in a special experimentally controlled engine with a variable compression ratio, against a standard set of test protocols that is basically a miracle cure for insomnia.
The engine runs at 600rpm for the RON test and 900rpm for the MON test and the difference between the two values is an index of the fuel’s sensitivity.
It’s certainly possible to have octane ratings greater than 100. E85 is about 102, straight ethanol or methanol - both about 109, propane and butane (think: LPG) both about 112.
Methane - that’s natural gas - is about 120. Toluene - a fairly evil octane boosting additive - is about 121. And hydrogen gas is more than 130. Who knew?
https://wn.com/Top_10_Facts_About_Octane_Rating_Every_Car_Owner_Should_Know_|_Auto_Expert_John_Cadogan
Coming up - the top 10 things you need to know about octane rating.
Number one with a bullet: Never use a fuel with an octane rating lower than the carmaker recommends. That’s a great way to damage your engine. Going higher than the minimum octane the manufacturer recommends is quite OK. But it will cost you more money.
Two: Octane rating has nothing to do with more energy, intrinsically. Ethanol blended fuels pump up the octane, but they actually have less energy than low-octane gasoline. The two things are unrelated.
Three: Octane has nothing to do with the speed of combustion, or the heat of combustion. These are two things that scientifically illiterate halfwits claim all the time. Simply not true.
Four: Octane rating is all about knock resistance. It’s about burning in a controlled way under pressure, while hot.
High octane fuels simply resist autoignition better than low octane fuels. Autoignition - which is the fuel burning thanks to the heat and compression in the chamber - before the spark plug fires - causes knock. Which destroys engines at high rpm and big throttle inputs. That’s bad.
Five: If an engine is optimised for high octane fuel the designers can increase compression and add ignition advance, because the fuel is more resistant to autoignition. And it’s these two things that lead to a peak power increasefor engines optimised for high octane fuel.
Six: If you use high octane fuel in an engine designed for low octane fuel, the engine will adapt up, slightly. The knock sensor will allow a small increase in ignition advance and there will be a slight increase in power. Slight.
Certainly not as much as there would be if they increased the compression ratio.
Seven: Here in Shitsville, it’s almost never economically rational to use premium fuel in a car designed for regular. The extra cost of the premium fuel is, in practice, never offset by the slight increase in economy. You’re just blowing money out the exhaust pipe unnecessarily.
Eight: And that’s why fuel manufacturers talk up the alleged ancillary benefits of premium - such as the spurious claim that premium will also keep your engine clean. And if you believe that, I’ll sell you the Shitsville Harbour Bridge. DM me. It’s such bullshit. They’re not promoting premium because it’s a benefit to you - they’re promoting it because it’s a benefit to them.
Nine: If you’re reading owner’s manuals from overseas, bear in mind that octane ratings are not constant around the world. Here in Arse-trailer, we use ‘research octane number’ or RON. Same standard in most of Europe.
But in North America they use the Anti-knock index, which is the numeric average of the RON and another octane measurement standard called the Motor Octane Number.
Essentially, for any given fuel, RON is about four points higher than the Anti Knock Index. So 91 here - our entry-level cat’s piss petrol - is about the same as 87 gasoline in the USA and Canada.
And if you’re wondering why so many Euro cars demand 95 here in Shitsville, it’s because 95 is the default, entry-level cat’s piss in Europe. They don’t do 91.
Finally, number 10: Time to go 100 per cent propeller-head. Octane rating is an index of the knock resistance of a particular fuel compared to a laboratory standard kind of fuel called iso-octane. Which is actually 2,2,4 tri-methyl pentane - for those of you who remained awake for carbon chemistry in high school.
Iso-octane has an octane rating of 100, and another chemical - n-heptane has a rating of zero. There’s your measurement scale.
So, essentially, 91 RON unleaded has 91 per cent of the knock resistance of iso-octane when you run the test in a special experimentally controlled engine with a variable compression ratio, against a standard set of test protocols that is basically a miracle cure for insomnia.
The engine runs at 600rpm for the RON test and 900rpm for the MON test and the difference between the two values is an index of the fuel’s sensitivity.
It’s certainly possible to have octane ratings greater than 100. E85 is about 102, straight ethanol or methanol - both about 109, propane and butane (think: LPG) both about 112.
Methane - that’s natural gas - is about 120. Toluene - a fairly evil octane boosting additive - is about 121. And hydrogen gas is more than 130. Who knew?
- published: 19 Jan 2019
- views: 48482
3:09
I-Octane - No Ratings (Official Video)
I-Octane presents the official video for "No Ratings"
Connect with I-Octane:
https://www.instagram.com/realioctane/
Produced by Mari Muziq Records - @marimuzi...
I-Octane presents the official video for "No Ratings"
Connect with I-Octane:
https://www.instagram.com/realioctane/
Produced by Mari Muziq Records - @marimuziq
Directed by KingPride Productions
#IOctane #NoRatings
http://vevo.ly/UqJiqC
https://wn.com/I_Octane_No_Ratings_(Official_Video)
I-Octane presents the official video for "No Ratings"
Connect with I-Octane:
https://www.instagram.com/realioctane/
Produced by Mari Muziq Records - @marimuziq
Directed by KingPride Productions
#IOctane #NoRatings
http://vevo.ly/UqJiqC
- published: 03 Mar 2023
- views: 120944
16:11
What is the BEST Fuel to Use in Your Car or Truck and WHY
Ever wonder what grade gasoline should you use in your car (what octane)? Are you paying for premium gas when you can just use regular? Are you using regular an...
Ever wonder what grade gasoline should you use in your car (what octane)? Are you paying for premium gas when you can just use regular? Are you using regular and damaging your engine? This video will bust all of the myths and tell you the FACTS on what fuel you should use and why.
Many people throw money away and fill their car with the incorrect fuel every day. Running premium or midgrade in a car designed to run regular is a waste of money and has no HP or MPG benefits. You will not make more power or get better fuel economy running premium fuel if the car manufacturer tunes the car to use regular gas in most cases. I also see some people run regular gas in cars that need premium and the knock sensors have to adjust timing significantly to prevent damaging engine knock. I also hear a lot of people say that premium gasoline has more energy or burns cooler or slower so I will put a rest to all of these "myths" with facts.
More info on fuels and additives: https://www.shell.us/motorist/shell-fuels/shell-v-power-nitro-plus-premium-gasoline.html
Fuel Injector Machine I used: https://amzn.to/2MeGbnZ
→ Become a ChrisFix Subscriber: http://www.youtube.com/subscription_center?add_user=paintballoo7
→ Instagram: https://www.instagram.com/chrisfixit
→ Facebook: https://www.facebook.com/chrisfix8
→ Website: http://www.ChrisFixed.com
→ My Channel Home Page: https://www.youtube.com/ChrisFix
**If the video was helpful, remember to give it a "thumbs up" and consider subscribing.**
Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.
https://wn.com/What_Is_The_Best_Fuel_To_Use_In_Your_Car_Or_Truck_And_Why
Ever wonder what grade gasoline should you use in your car (what octane)? Are you paying for premium gas when you can just use regular? Are you using regular and damaging your engine? This video will bust all of the myths and tell you the FACTS on what fuel you should use and why.
Many people throw money away and fill their car with the incorrect fuel every day. Running premium or midgrade in a car designed to run regular is a waste of money and has no HP or MPG benefits. You will not make more power or get better fuel economy running premium fuel if the car manufacturer tunes the car to use regular gas in most cases. I also see some people run regular gas in cars that need premium and the knock sensors have to adjust timing significantly to prevent damaging engine knock. I also hear a lot of people say that premium gasoline has more energy or burns cooler or slower so I will put a rest to all of these "myths" with facts.
More info on fuels and additives: https://www.shell.us/motorist/shell-fuels/shell-v-power-nitro-plus-premium-gasoline.html
Fuel Injector Machine I used: https://amzn.to/2MeGbnZ
→ Become a ChrisFix Subscriber: http://www.youtube.com/subscription_center?add_user=paintballoo7
→ Instagram: https://www.instagram.com/chrisfixit
→ Facebook: https://www.facebook.com/chrisfix8
→ Website: http://www.ChrisFixed.com
→ My Channel Home Page: https://www.youtube.com/ChrisFix
**If the video was helpful, remember to give it a "thumbs up" and consider subscribing.**
Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.
- published: 15 Oct 2019
- views: 17370986
8:16
PD Simplified | Fuel Octane : What Should You Use?
Petrol comes in various octane ratings. Regular petrol is Octane 91, but there are more expensive blends that can be Octane 95, 97, or even 100. However, the hi...
Petrol comes in various octane ratings. Regular petrol is Octane 91, but there are more expensive blends that can be Octane 95, 97, or even 100. However, the higher the octane count, the more expensive petrol gets. So which one do you really need? The answer lies, not in this video, but in your vehicle’s user manual. Be sure to check it to see what octane rating your vehicle needs. Most vehicles sold in India will run just fine on regular pump gas. However, if you have a car/bike with a high compression ratio, it could benefit from an octane rich petrol. In this episode, Shumi simplifies fuel octane ratings and which one should you really use.
#PowerDrift
Join the 2 Million strong #PDArmy : http://bit.ly/PDARMY
Stay updated with News, Behind the Scenes here : https://www.instagram.com/powerdrift/
T-shirts, Badges & More official merchandise : http://www.powerdrift.com/merch
Find us on Facebook: http://facebook.com/POWERDRIFTOFFICIAL/
Follow us on Twitter for Launch updates & more : https://twitter.com/powerdrift
https://wn.com/Pd_Simplified_|_Fuel_Octane_What_Should_You_Use
Petrol comes in various octane ratings. Regular petrol is Octane 91, but there are more expensive blends that can be Octane 95, 97, or even 100. However, the higher the octane count, the more expensive petrol gets. So which one do you really need? The answer lies, not in this video, but in your vehicle’s user manual. Be sure to check it to see what octane rating your vehicle needs. Most vehicles sold in India will run just fine on regular pump gas. However, if you have a car/bike with a high compression ratio, it could benefit from an octane rich petrol. In this episode, Shumi simplifies fuel octane ratings and which one should you really use.
#PowerDrift
Join the 2 Million strong #PDArmy : http://bit.ly/PDARMY
Stay updated with News, Behind the Scenes here : https://www.instagram.com/powerdrift/
T-shirts, Badges & More official merchandise : http://www.powerdrift.com/merch
Find us on Facebook: http://facebook.com/POWERDRIFTOFFICIAL/
Follow us on Twitter for Launch updates & more : https://twitter.com/powerdrift
- published: 27 Nov 2021
- views: 203609