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Discussion Starter · #1 ·
just recently got my first SI. it is a 2007 Coupe. Was wondering if 91 octane that is gasohol mix okay for these cars? i am in the military and this is the only mix they provide on base.. feedback please as i need to fill her up for the first time soon!
 

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I run it and have not noticed a performance increase. I religiously measure my mpg and also did not see a decrease here. Last tank of 91 octane I burned yielded around 31 mpg.
 

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just recently got my first SI. it is a 2007 Coupe. Was wondering if 91 octane that is gasohol mix okay for these cars? i am in the military and this is the only mix they provide on base.. feedback please as i need to fill her up for the first time soon!
military personal should be able to help you out. theres a military thread on the site
 
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