I usually try to stay away from shell, but not because of the brand. Just because the shell gas station owner in my town is a crook. Its always 9-15 cents more at his gas station than anywhere else, just because he is the only gas station in a certain direction. In my daily driver I put 87 (volvo 850) in my Scout II I put 87, pretty much the only thing I put 89 or 91 in is my dads volvo 850R or our 71' Opel GT thats a little built up.