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I drive a car that only requires 87. When gas got down to $2.00/gal, I tried 93 for a couple tanks in a row, just to see what it did for mileage/power. The re
by eitally 11y ago
I drive a car that only requires 87. When gas got down to $2.00/gal, I tried 93 for a couple tanks in a row, just to see what it did for mileage/power. The result: a 4Runner is a big, brick-shaped SUV and will drive like a big, brick-shaped SUV no matter what gas is in it. I switched back to 87.
- modoc 11y agoLower octane fuel actually has more energy per volume, so if your car's compression is low enough for 87, using 93 just gives you less power and worse efficiency.
- outside1234 11y agoAlso can slowly wreck your engine since it burns hotter. Use the octane your car was designed for!