dssenne Posted February 27, 2013 Share Posted February 27, 2013 Is regular (87 octane) gas is ok for a 1999 EJ25 DOHC engine? When I search this I find that while the 1996 had HLA heads and 91 octane gas was recommended, in 1997-1999, different lifters were used and the octane recommendation was lowered to 87. Is this correct? Thanks Link to comment Share on other sites More sharing options...
Suzam Posted February 27, 2013 Share Posted February 27, 2013 Correct, only the 1996 2.5 required 91 octane all other Subies with the exception of turbo models run fine on regular. Link to comment Share on other sites More sharing options...
dssenne Posted February 27, 2013 Author Share Posted February 27, 2013 Thanks! Link to comment Share on other sites More sharing options...
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