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Only 91-Premium Available, and No E85

B

born2pdl

New member
I've read a few threads about fuel but I'm still not sure what would be best for my car (stock 06 GT). In higher altitude states many cars don't need as much octane, so stations carry 91 for premiumis. Boosted cars get crapped on. The only E85 is 70 miles away. Of course some 100 is available but it's $8.50/gal. Toluene here is $25/gal!

I'm new to the boosted 3.8. Will it be OK on 91? Feels like a lot of KR is going on when I floor it. I think it had regular 85 in it when I bought it a few days ago. Did that hurt the engine?

Is there a reasonable fuel improvement idea for what I have available? Thanks.
 


Stop flooring it if you think there 85 in there and that's it's knocking.

91 is fine is 93 isn't available

And stock cars do knock


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