Originally Posted by jay25RS
1. I use 87 octane exclusively. I try to fill up from the same station(s) around me but I drive a lot and end up filling up out of state or town but I do try to stick with brands... (For my next tank, I may fill up with 91 just to experiment.)
It's going to take more than one tank to be able to confirm any difference through experimentation. Just sayin'.