Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Does High Octane Gasoline burn faster then Low Octane?
- Anonymous1 decade agoFavorite Answer
High octane fuel has a higher flashpoint for a more controlable combustion. It actually burns a little bit slower and it is harder to ignite. It is necessary for engines with high compression ratios and usually requires a bit more spark advance than a standard engine. In such circumstances as an engine with 11:1 or greater it would be wise to use no less than 95 octane and you will need a good high energy ignition system. Unless you have a high compression engine, higher octane fuel will do you no good whatsoever. It is also recomended for engines that will be rev'd above 7000 rpm's. The whole idea of high octane fuel is to prevent detonation (that's when the fuel spontaneously combusts in cylinder without spark). If you are determined to waste your money and wish to use high octane fuel in a car with 9.5:1 or less compression ratio you will run the risk premature carbon build up in the combustion chamber which can cause the condition that high octane fuel is intended to cure, and make short lived the span of you catalytic converters. I told you higher octane fuel is harder to burn.
And now you may read all of the shade tree answerers who think they know Dick
- 5 years ago
I m in total agreement with corn_whole_leo on this. He is correct in everything he says. In addition I may add that one gallon of higher octane fuel has less BTU s of stored energy that one gallon of 87 octane fuel. That means poorer mileage with the higher octane fuel. If you are a yay-hoo who knows more than the army of degreed automotive engineers and cannot and will not read the owner s manual on the fuel required by your vehicle engine... get ready to spend thousands on new converters and pulling the engine apart to get rid off all that carbon that s built up. Mascon ASE Certified Master Technician Automobile and Master Medium Heavy truck Technician.
- merkelLv 45 years ago
in many cases speaking "racing gasoline" will burn "swifter". "gasoline" would not unavoidably propose gasoline, we could be speaking methanol, nitromethane, all varieties of stuff. Racing oriented mixes are in many cases extra oxygenated and supply a swifter and extra finished burn. Octane score extremely potential resistance to igniting. the better the octane, the harder the gasoline is to mild off. gasoline under the comparable circumstances will burn at with regard to the comparable fee. the better octane rated gasoline will stand up to preigniting before being lit off by using a spark plug under greater temperatures and pressures than the decrease octane rated gasoline.
- How do you think about the answers? You can sign in to vote the answer.
- mustang656Lv 41 decade ago
it burns slower and more controlled, that's why your timing is able to be advanced and high compression motors can only run on high octane.
- 1 decade ago
HIGH OCTANE GAS BURNS SLOWER.
- La-z IkeLv 41 decade ago
no slower. thats why it may be worth the money to put "the good stuff" in your car. the added cost may give you so much better mileage it would offset the extra cost. most cars are made for regular and wouldn't run any better tho.