January 28, 20188 yr What year did subaru start using the updated head gaskets in the 2.5 outback. And are they really less prone to the d gaskets issues.
January 29, 20188 yr According to this guy it was pre 2010 for the Outback https://allwheeldriveauto.com/subaru-head-gasket-repair/ Main problem with these is that some get overheated multiple times and eventually have rod knock, usually after spending a bunch of $$$ or time replacing head gaskets. If it was an SOHC engine it may be an external leak (oil or coolant). The EJ25D (DOHC) engines were prone to exhaust leaks into the cooling system. Best gasket to use is the Turbo one 11044AA770 from Subaru, its a Multi-Layer Steel gasket.
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