Two different E.P.A certification engineers told me to put nothing but Chevron supreme fuel in the new cars we built at Shelby American & Saleen Mustang. 1999 Shelby Series 1 & 1994 Saleen SR351. I have never had a fuel problem since then & no need to use additives.
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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