b8tzm Posted September 4, 2005 Share Posted September 4, 2005 I have been burning unleaded 87, are there any reasons I shouldn't switch to Ethanol 89 Octane. I have 3800 miles on our Forester THANKS Quote Link to comment Share on other sites More sharing options...
nipper Posted September 5, 2005 Share Posted September 5, 2005 Aside from any extra expense, going up in Octane never hurt anything, but going down can. What deos the owners manual say? nipper Quote Link to comment Share on other sites More sharing options...
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