1st off i am a Sunoco Dealer and Ex VP fuel dealer.
the octane rating is conssdered only to combat detonation due to high compression.
if your motor is 13.1..then 110 octane would be fine..and if you wanted to add a little room for safety then the 112 supreme would be more than enough..
DO NOT use pump gas with your combo..
Brian
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "