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Old 09-08-2010, 08:53 PM   #44
h2oplay
Winners find a way
 
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Drives: 2010 2LT/RS M6
Join Date: Jun 2010
Location: NE Ohio
Posts: 1,137
Quote:
Originally Posted by lets_go_bills View Post
There is no difference. To some it's important but any "difference" they claim to "feel" is all in thier head. Truly. If GM designed the car to run "better" on a higher octane rating, they would recommend the car run on it. The manual says 87 octane is fine to use. Use that.

Octane levels have nothing to do with fuel quality. Always buy your fuel from a reputable company.

Want the added detergents and additives? You don't need higher octane, buy STP fuel cleaners/additives/boosters. They make great products and you only have to use it twice a year ($5/bottle). It'll reduce any knocks, improve fuel economy and restore power/acceleration.

Just my opinion, but anyone who uses anything above 87 in their V6 is being silly and wasting their money.

did you try this yourself?
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