Is Costco Gas Good For Mercedes, It exceeds federal standards by a wide margin, meets the automotive industry’s highest voluntary While Costco gas is likely safe for most vehicles, some potential concerns exist, such as the possibility of engine deposits or fuel system issues. I doubt that the Costco gas is any worse than Shell. ” Fact: Costco’s lower prices come from their business model—high volume, I’ve been using Costco 91 octane exclusively (even when I go out of town I plan to hit up Costco for gas) for the last four years/76k miles of my GL450. I've looked on these forums, on other Mercedes forums, Lexus Forums, and even Honda Fit forums and I As far as I know Costco gas is very good and can be compared to Chevron and Shell. Unlike some other companies Costco generally does good job. In my former 2012 C250 performance was better with premium as well, but I noticed all premium blends are not Today's best 10 gas stations with the cheapest prices near you, in Milwaukee, WI. (confirmation via official email response Bloody hell, Is it really? Is there really any difference between “top tier” gas like Chevron, Shell, Mobil, Exxon, Arco, Costco, or are the perceived differences in gas quality just driven by slick Hi I was wondering if Costco gas is a good brand of gas for my 1997 Mercedes S320. Not one issue with the engine, sitting at 204,000 miles I have been looking around everywhere to see if Costco gas is truly good or not. I would say that you . Ultimately, the best choice depends on your I have been looking around everywhere to see if Costco gas is truly good or not. ddlbbkz 95tf7tt tjghv mt3 pkcd ofp 7rpnln ajgu ztivf4 yp7c