re: Idiots in Costco gas line...

quote:

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I've heard from a mechanic that the only fuel related issues he's seen over the years are vehicles that used only off-brand gas. No Exxon or Shell or other major brand.

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That mechanic is a dumbass. Costco and Qt, for example, are both "Top-Tier Rated" and thus meet the same elevated detergent standards that Shell, BP, etc. do. Sam's, RaceTrac, and Walmart, however, do not. There's a difference, but not between Costco and Shell.