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Old 03-11-2010, 02:06 PM   #11 (permalink)
370Zsteve
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Join Date: Sep 2009
Location: Gold Coast CT
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Drives: 2019 Corvette G.S.
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Originally Posted by 370zFORme!! View Post
Never! I dont even shop at costco let alone use their gas. I have always used 91. There is a gas station near my parents that sells race gas 100 octane! I might try that and see if that helps!
O/T nothing wrong with Costco gas or any other off-brand fuel. It all comes from the same refineries.
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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.
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