pat1977 Posted June 23, 2018 Share Posted June 23, 2018 Hi can anyone tell me whats the best oil to use in my 2004 impreza wrx the oil cap dont say anything and ive been told and ive used it 5w30 but the letters at the end of it does that matter aswell like c3 or ag or af or a5/b5 Quote Link to comment Share on other sites More sharing options...
stants Posted June 24, 2018 Share Posted June 24, 2018 Any good branded fully synthetic oil will be fine, and should exceed the manufactures specs, As for brand all of us use Miller's oils but it personal preference really, has your car been modified in any way ? Sent from my SM-G960F using Tapatalk Quote Link to comment Share on other sites More sharing options...
pat1977 Posted June 24, 2018 Author Share Posted June 24, 2018 Slightly Just gotta decat or sports cat it then stage 1 remap it Quote Link to comment Share on other sites More sharing options...
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