Since the car is mapped for 91 than there is no use putting in 93....unless that is the only one offered. Some people just like to waste money I guess.
Every car that uses premium gas is mapped for 91 from the factory bc it is the widely available minimum octane rating
Oh and the difference between 91 and 93 is more like 5 cents.....so even that annual amount gets sliced in half to 93 bucks and change.
Last edited by zman1910; 03-07-2011 at 02:23 PM.
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