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Thanks but no thanks for the condescending attitude. It’s my 3rd Wrangler & I have a Degree in Organic Chemistry - I read the damn manual. Are you hung up on “optimal performance use 91 octane” ? Who even has access to fuel under 87 octane? IF you were paying attention - my concern is with...

I’m aware of the requirement to run 91 Octane, however my Fuel Card w/ employer does not allow for premium fuel use. I’m just under 14k miles & have been using premium fuel prior to recent gas card issue. The reason for my post is I’m concerned w/ the “knocking” when she is warming up in Park -...