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G-772041
I had an engine problem (all cylinders miss fired at the same time) took it to dealer and they have fixed it , said "you probably filled bad gas, we didnt do anything , no check engine light is on right now"( I fill premium at SHELL only). They didnt drain fuel or anything, they hooked up computer 100% , opened engine cover and were driving my car from their shop to highway several times(i got gps inside). Problem was fixed but they don't want to tell me what happened. Any one had anything like that?

