Hey guys,
I bought a 2009 Forester XT about 2 weeks ago and reset the MPG calculator while I was on the freeway and was getting about 33 MPG. Since then I've been filling up with premium like it says, and all of a sudden I'm only getting 25 MPG on the freeway.
I'm not sure if the dealer had it filled with regular gas when I bought it, but I'd really like to get that 33 MPG back! I've been driving it the same way the whole time too. Is there any reason why I can't just switch between regular and premium gas every other tank, or maybe get mid-grade? Would regular be bad for the engine but give better MPG?
Thanks,
Owen
