ok, while i was at the dealership yesterday i asked one of the technician guys what exactly would higher octane do to my truck in terms of performance or mpg. he said absolutely nothing. he said that the 2.2s and even some v8s dont have the compression to do anything with the higher octane so i would pretty much be spending more money on nothing...he said 87 octane would be adequate(spelling???) wtf??? is he talking out his arse or what?