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owen1979

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  1. 2009 Forester gas and MPG question

    owen1979 posted a topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
    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

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