Originally Posted By: erogers
If you're not going to buy Shell gas because it's not American owned, I guess anything from Conoco-Phillips would be good...it gets a top-tier rating for gasoline, just like Shell.
Which has always made me think the whole "top tier" nonsense is just a case of pay some money, get the right to slap a rating on your sign.
Conoco gasolines run like in my old iron. The new cars adapt to it and just get lousy mileage, but the old ones ping and hesitate like crazy even on Conoco premium. No way will I ever use it unless I have to. Strangely, its the ONLY fuel I've found that causes such a reaction in my cars. I'm not a one-brand guy when it comes to fuel and I regularly use Shell, Exxon, Chevron, Valero, Texaco, and Mobil without noticing any difference at all... but I can *immediately* tell if my wife filled up the car at Conoco and didn't tell me.