Hi all, 2012 prius with 200k miles. About to tackle the head gasket job the gen 3 is plagued with. Of course I was planning on cleaning the hell out of the EGR valve while I'm in there (never been done). Just an opinion question really... Would you replace the valve and cooler while you're in there? I know one answer will be : "if you feel like spending a few hundred go for it" Mind you-no signs of a faulty one. Passes emissions yearly, good acceration, no knocking. Kind of a tough question to answer i know. Comes down to $$$ I guess
