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Posted by gmharris [71.105.35.169] on Thursday, January 10, 2013 at 21:45:48 :
In Reply to: Re: ethanol gas& my m37 posted by Craig from Illinois [184.73.77.1] on Thursday, January 10, 2013 at 08:07:45 :
Run the lowest grade that doesn't ping. Higher octane doesn't help anything but pinging.