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Old 08-24-2011, 02:14 PM   #2 (permalink)
rmay635703
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Join Date: Jun 2008
Location: Somewhere in WI
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Silver - '10 Chevy Cobalt XFE
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Quote:
Originally Posted by DonR View Post
Not sure where this belongs, move if necessary.

I have a question about engines with knock sensors & gasoline octane rating.

Has anyone experimented with different octane ratings on engines with knock sensors? Would the higher octane rating stave off knock, thus allowing more advanced ignition timing?

Don
Yes but on my cobalt which is over 10:1 it still swings out to 50 degrees anyway. I do seem to get better FE on higher octane.
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