Rick's Free Auto Repair Advice

Posts Tagged: 84 octane

Will higher octane gas improve MPG

Will higher octane gas improve MPG In most cases, higher octane gas will not improve performance or MPH That’s because the ONLY difference between 87 octane and 93 octane is fuel’s ability to resist detonation and knock. That’s it. Premium gas doesn’t contain more energy compared to regular octane fuel. And, unlike the myth, premium fuel does not contain any more cleaning additives than 87 octane fuel. The only time higher octane gas will improve performance and MPH The only exception to that statement is if you own a late … Read More


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