Does 91 Octane (Supreme) make a car go run faster?

Question

What is 91 Octane for?

Answer 1

in short no, what it does do is help control knocking in older cars with alot of carbon buildup and it helps unlokc the power of sports and high performace cars , its also needed in most sports cars to prevent pinging. all that differs it from other octanes is its slower burn rate and ability to help with complete combustion in high perf cars. it does not give you horsepower it just lets your car use what power it is already capable of without preignition or detonation.

Answer 2

No not at all. That is just a ploy to induce you to buy more expensive gas. They have been using it for years. One reason that this idea flies at all was that before the advent of jets the piston powered fighter planes required 145 octane aviation gasoline. Therefore, everyone thought it would make a car fly too. Octane is actually a scale that indicates how much LESS explosive the gasoline is. In high performance cars of years ago the only way to make it more powerful without making it bigger was to increase the compression ratio (How big the volume of each cylinder in the piston engine is (The piston is at BDC = Bottom Dead Center) divided by the volume of that cylinder when the piston was at the top most compressive point (TDC = Top Dead Center). Most cars today ratio is around 8:1 or 9:1 After 10.5:1 the compression is so great that the gasoline/air mixture begins to heat up from the compression energy alone. If it was a very explosive gasoline it would explode even as the piston was still traveling up to TDC. This is a power robbing pre-explosive condition known as "ping. " Now diesel engines are built much tougher then gasoline engines as the compression ratio is 22:1 That heats the fuel/air mix so hot that no spark plug is required. The explosion that powers the engine is literally spontaneous. Giving you 10% better mileage. But diesel fuel is almost kerosene, less refined then gasoline, and is not very volitile, hence it can take that compression ratio and still run without ping. So in high compression gasoline engines they have to add something to make the gasoline LESS explosive. That additive was lead for many years until the polution it caused stopped its use. So High octane gas is actually LESS powerful, in a sense, not more. The first car to have this problem was the 1925 Chrysler. It was the first car to have an electric starter. The infamous Charles Kettering was the inovator who did this. Many of the car pundants of that era thought the ping problem the car was experiencing was due to the addition of the electric starter. Eventually automotive engineers figured it out, and corrected the gasoline by adding lead. So the big powerful cars of the 1930's required the higher octane gas. and since they were so big and powerful everyone thought they needed a more powerful gasoline which they thought was indicated by the higher octane rating. A total myth that has persisted for decades. Today about 97% of the cars on the road will run very well with 87 octane gas. The 3% of cars that need the higher octane are owned by people who do not care that it is more expensive, the rest who use it are wasting their money.

Answer 3

No higher octane fuel has a hotter burn temperature and is for high performance engines and or trucks that tow a lot of weight to help prevent pinging or pre ignition. It is also good to run a few tanks through your car every once in a while because it will actually act like a mild fuel system cleaner. Also it may give the engine a couple more hp (1-2) but it is not noticeable, and not worth the extra money all the time.

Answer 4

No it does not. It is best to use the fuel recommended by the manufacturer in your car. Using higher octane fuels in a car that is designed for lower octane can actually cause damage to a car.

Octane does not mean more power. Octane is a rating of how fast the fuel burns in the combustion chamber. Higher octane fuel actually burns SLOWER in the combustion chamber to prevent pinging or knocking in higher performance engines.

Using it in an engine designed for lower octane subjects the piston, cylinder walls and valves to heat for longer periods of time. That can result in premature wear of engine parts.

Use the fuel for which your car is rated.

Answer 5

Not really. 91 octane gas is cleaner, and burns more efficiently so it does get a little more horsepower. That will slightly improve acceleration, but not top speed. The car can still only go so fast, but it will get to that speed faster.

Answer 6

no, it is just how much the fuel can be compressed before exploding if u have a high compression motor ex. 11 to 1 like a honda v-tech or forced induction like turbo you need high test fuel to stop the engine from pre-ignition or knock or ping that can lead to a burnt hole in the piston or fried plugs in a new computer controled cars it will make timing adjustments or retard the spark to help the motor run the best some cars only recomend 87 because that is what it was programed to run.

Answer 7

no, all it does is keeps a higher performance engine from pinging on acceleration, if you don't have a high performance car you are just wasting your money using 91 octane,

Answer 8

It is a way better type of gas that will help clean jets in your carburetor but over all save the money and it is cheaper to go to pep boys or some kind of gas additive.

Answer 9

no, octane raises the flash point of gasoline. which allows for higher compression, and prevents preignition. knocking and pinging.

Answer 10

Absolutely not. Has nothing to do with power or speed.
WAIT , maybe it does, it makes you run to the bank