krot84 Posted August 15, 2013 Share Posted August 15, 2013 Hello guys I currently run oem Subaru 10W40 engine oil. At the next service I want to start using the Castrol Edge FST 5W30 one. The Subaru mechanic told me that i should flush my engine before i do the oil change. What do you think? Should use the engine flush or not. P.S The car has ~150000 Kilometers Thanks Link to comment Share on other sites More sharing options...
BAC5.2 Posted August 15, 2013 Share Posted August 15, 2013 What does he mean by "flash the engine"? [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
krot84 Posted August 15, 2013 Author Share Posted August 15, 2013 Adding the little can of some kind of solvent to the engine before changing the oil, something like this http://static4.cardekho.com/18935-large/stp-engine-flush-450ml.jpg Link to comment Share on other sites More sharing options...
krot84 Posted August 15, 2013 Author Share Posted August 15, 2013 oh, i had a mistype, i meant flush and not flash. Fixed it. Link to comment Share on other sites More sharing options...
BAC5.2 Posted August 15, 2013 Share Posted August 15, 2013 Nope, just switch oil. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
krot84 Posted August 15, 2013 Author Share Posted August 15, 2013 So if i understand you correctly the viscosity change won't do any harm? Link to comment Share on other sites More sharing options...
BAC5.2 Posted August 15, 2013 Share Posted August 15, 2013 Correct. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
road race legacy Posted August 15, 2013 Share Posted August 15, 2013 No need to flush. Just drain and fill with new oil and filter. Link to comment Share on other sites More sharing options...
krot84 Posted August 15, 2013 Author Share Posted August 15, 2013 Thanks a lot guys! Link to comment Share on other sites More sharing options...
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