Thread: "premium recommended - not required"
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Old 05-27-2013, 12:20 PM   #6
cornerspeed92


 
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Drives: 2013 1SS 1LE
Join Date: Jul 2012
Location: Colorado
Posts: 4,188
I know we are supposed to use "top tier" fuel,which i do.My question is this,Costco is now advertising"detergent"cleaning additive fuel.Is that basically what Shell,Chevron etc. is?
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