Premium gas compared to regular?

Answer 1

Use the type recommended by the manufacturer.

If you do not need premium it even may cause problems.
Plus you waste money.

Answer 2

"Premium" gasoline is higher octane. The higher the octane rating (which can come from more actual octane as opposed to lighter hydrocarbons, or which can come from ...I believe the average size/combustability of the hydrocarbons in the gasoline) the more resistant the fuel is to exploding from the combination of pressure and temperature that occurs in an engine.

Gasoline engines are designed to have their fuel detonate at a particular time in the cycle, which is why they have spark plugs. If your fuel is exploding before the spark, you're doing damage to your engine (with the symptom being "knocking" or "pinging" sounds)

Engines that run really high compression, like most high-performance engines, need fuel more resistant to detonation. That's why those cars require premium gasoline.

Most cars, however, do NOT need it. It generally won't HURT your car, but it absolutely will not help most cars if they are in good repair.

The only circumstance under which you should use premium gas in a car whose owner's manual recommends regular is if you are getting knocking and pinging on regular gasoline. This means you have problems, by the way...possibly big ones. Running premium gas is only a temporary fix.

Answer 3

an aeroplane needs ATF, a Formula One Car needs high octane gas. For ordinary cars and ordinary driving regular gas is good enough. All the ads that tell otherwise is just to sell you something that you really don't need.

Answer 4

the difference in gas is how it burns. the higher the octane the smoother the burn. Cheap gas(87 oct) typically explodes. It does not burn, this is why in high performance engines they tell you to use better gas.