my brother in law sets up some of the testing for FCA (ie Fiat/Chrysler). they do that because 93 octane is commonly the gas available to them that is ethanol free. the ethanol free gas gives the best fuel efficiency. it has NOTHING to do with the higher octane.
believe that if you want, but it simply is not true. That excuse doesn't work when you realize they have always used 93.
03-31-2014, 08:01 AM
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