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2026. 6. 30. 작업

증상

What are the benefits of premium (high octane) petrol?

처리 내용

There is absolutely no reason to use higher-octane fuel unless your car explicitly requires it. The higher the octane, the more compression/heat required to combust the fuel. In high-performance engines (turbo-charged, high compression cylinders, etc), a higher octane fuel is needed so the fuel doesn't combust prematurely (knocking). If you put this fuel in a "normal" engine, it may even have detrimental effects, since the engine will have a harder time combusting the higher octane fuel. Even if your car requests a higher octane fuel, it may be possible to use a lower octane fuel because of variable timing and other magic. Your manual would state that. However, it will not have as much performance, since the timing is being retarded to prevent knocking. Note: I am assuming that in the UK, premium = high-octane, the same as here in the States. Over here, premium is ONLY a designation of octane rating, and has nothing to do with the additive package, etc.