Originally Posted by Tony407
Are those of you close to the 40 mpg mark using supreme? I've heard that this makes a difference although it sounds suspicious to me.
It is my understanding that any gas above regular unleaded is entirely unnecessary - the engine is built to run a lifetime on regular (and E-85!).
I am curious if anyone has tried E-85 yet?!? I want to make sure my engine is well broken in before I use it, but it is tempting when it is always 50-75 cents less/gallon!