Will higher octane gas give me better fuel mileage?

Answer 1

not likely

octane does not burn hotter or slower it is used to reduce the chance of detonation in high compression motors

If you don't know shut your pieholes

Answer 2

No. Octane has nothing to do with mileage. Your car is manufactured to run on a certain octane fuel. Most cars run on regular gas. Generally, cars with higher performance have higher engine compression which requires higher octane to prevent early detonation (also called engine knock). Check by your gas cap, there should be a sticker that say what gas to use. If your car does not require premium gas, using it will not cause a problem, but it will be a waste of money.

Answer 3

No.

Higher Octane actually makes combustion more difficult. This is a plus in a higher compression engine, because otherwise the gas may ignite too soon. But in a car built for 87 octane, it would actually make combustion harder.

Your car with electronic computers running the show can easily compensate, but it's not going to get you better gas mileage.

Answer 4

I recommend what your car calls for. My Dad always used Hi Octane and in a 1993 Chevy Truck it started running like crap after a few hundred mi. Took it back to dealership and the mechanic asked what gradegas he used and my Dad said the best ,93 octane. Turns out the computer was getting readings and that was what screws it up ,performance wise.I asked one of the engineers at the plant and he said the same thing. Every other tankfull try using Lucus fuel inj cleaner and some STP gas treatment to get rid of any moisture in the tank. Keeps fuel inj clean for best performance and milage and eliminates any water you might have in the tank

Answer 5

Using a higher octane fuel than you car rquires will actually make mileage worse. Because a higer octane fuel will take slightly longer to combust, and if you car only requires 87, then using 93 will make the fuel burn longer and can actaully damage the engine over time.

Answer 6

Absolutely not. The only engines that need higher octane gas are ones with higher compression ratios, to prevent knock from pre-detonation. Unless your car specifically calls for higher octane, using it is a waste of money.

Answer 7

Unless your car requires high octane gas, save your money because it will not give you better fuel mileage. It is all in the mind.

Answer 8

* yes

* the logic is this, higher octane gas makes better combustion, thus, gives more power per drop of fuel, then gives you more fuel mileage

* but, this is with assumption that your style/habit of driving is still the same

* the percentage of mileage improvement by using higher octane gas could be small

* fuel mileage is also infected by the driver's style/habit of driving

[e-mail] ;)

Answer 9

Yes it will. High octane gas burns SLOWER. You will get more miles per gallon. It is def worth an extra 20 cents a gallon. Plus, it is better to get gas early in the day or late in the afternoon, when it is cooler. When it heats up, it expands! You can't get as much in your tank as you can when it is cooler. So, it is a waste of money to fill up when it is hot out. Plus, my dad states that that STP stuff is CRAP. He recommends the Chevron w/ Techron treatment. I told him one time I put STP in the car, he said, "You might as well have just pee'd in the tank."

Answer 10

It helps in complete combustion and prevents detonation and cracking.. May helps to keep ur engine running smooth.

It may not improve fuel mileage