Thread: Gas prices
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Old 04-29-2008, 06:44 PM   #12 (permalink)
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Re: Gas prices

Quote:
Originally Posted by Inogenius View Post
Yeah cars with higher compression ratios usually require premium. If you put in regular gas, it cause the gasoline to detonate early, which can crack the piston head.
I was have always heard that you just get less gas mileage and diminished performance out of lower grade gas in cars that recommend premium. I have never heard that it could damage them.

Quote:
Originally Posted by Necro View Post
so what if a car that is supposed to use regular uses premium? nothing?
Yeah, I have always heard that you can put 89 grade gas in vehicles that 87 is recommended from time to time to get an increase in performance with no problems.

93 grade is a waste in cars that 87 is recommended for.

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