View single post by answerman
 Posted: 07-12-2013 06:57 pm
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answerman

 

Joined: 09-10-2012
Location: Little Chute, Wisconsin USA
Posts: 381
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I'm pretty sure that my owners manual specifies a minimum of 91 octane. Plus, for whatever it's worth, "premium" is usually ethanol free, which is important in a car of the JH's vintage as the ethanol can cause havoc with the fuel system and seals and such.