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High compression engines, found in most performance cars, require a fuel that burns efficiently at a higher temperature. That’s what premium fuel does, it burns hot under high compression. In a normal engine, premium fuel does not burn completely, resulting in excess carbon build-up and carbon fouling of the spark plugs.

The end result is a less efficient engine that requires tune-ups more frequently. Oh, yeah, did I mention it also wastes money?

The only time you might need to switch to a higher octane fuel is if your car engine knocks when you use the recommended fuel. This happens to a small percentage of cars. Check your owner’s manual to determine the right octane level for your car. Regular octane is recommended for most cars. However, some cars with high compression engines, like sports cars and certain luxury cars, need mid-grade or premium gasoline to prevent knock.


by David W. Bynon
Copyright (c), 2000, Autopia Car Care -- All Rights Reserved






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Myth about Premium Gas
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