10:1 and I disagree with your above statement. Gas is gas. Most of the time you aren't going to be able to tell between one brand and the next. Always run 91 and above.
Also, more additives isn't always better.
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Collin
1995 L AWD
Locker
1987 Porsche 944 turbo
80k miles. MBC + Chips. Relatively Stock
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