Ford Mustang Forum - View Single Post - What octane are you using in the GT?
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post #9 of (permalink) Old 06-24-2010
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MustangFaith72's Avatar
Joined: Apr 2010
Location: NoVA
Posts: 1,141
I had a 2010, and I noticed no difference on the butt dyno when going from 87 to 93 octane.

However, with the 2011, I noticed a significant difference -- well worth the price to put 93 octane in there.
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