Thread: Octane Booster?
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      09-03-2008, 08:07 PM   #1
96OCTNE
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Drives: BMW M3
Join Date: Jul 2008
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Octane Booster?
Has anyone used STP or any brand Octane Booster on their E9X M3? What were the positives/negatives? For only 5 bucks a bottle I'm thinking why not.
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