Vmax540 Posted December 21, 2009 Share Posted December 21, 2009 Interesting ? http://content.kiplinger.com/tools/gas_mileage/result.php?gm_make=Subaru&gm_model=Forester+AWD&gm_cylinders=4&gm_transtype=Auto E.P.A. Classification: S.U.V. - 4WD Mfr. Model Engine Size(L) # Cyl. Trans. 2007 City 2007 Hwy 2007 City 2008 Hwy Fuel 2008 Subaru Forester AWD 2.5 4 Automatic 21 26 18 24 Premium Subaru Forester AWD 2.5 4 Automatic 23 28 20 26 Regular Quote Link to comment Share on other sites More sharing options...
CNY_Dave Posted December 21, 2009 Share Posted December 21, 2009 Premium has slightly less energy content. Dave Quote Link to comment Share on other sites More sharing options...
bheinen74 Posted December 21, 2009 Share Posted December 21, 2009 premium. takes more than just one tank to get accurate results. the ecu must relearn and this also takes several 2 or 3 tanks of same octane in a row to get you a accurate reading. Quote Link to comment Share on other sites More sharing options...
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