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race Gas + 91 = ??

2748 Views 22 Replies 13 Participants Last post by  Bignmz04
So I found a station right by my house that has all the way upto 122 leaded and methyl fuel

My question is what happens if I add 122 leaded fuel into my 91 unleaded?
Will this do anything on performance or will it screw with my car?
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no e85 fans?
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