Re: Shell gas vs BP gas
I have used Speedway 89 and 91 octane for years in my A6 and Crossfires with no problems. Since I don't race them, I have no way of comparing performance of one brand over another. Most gas comes from the same distribution channel (refiner and pipeline) as mentioned, the only difference is the additives which usually don't impact octane. When I'm on the road I use BP or Shell, whichever is least expensive. I can understand boycotting BP for those still pissed off about the Gulf spill. But then, Exxon had that little problem in Alaska.