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head gaskets

  1. Engine is out... Valve covers are leaky - should I replace the head gaskets?

    Engine, Power, and Performance
    Hi, I'd appreciate some input. I've got a 2008 Tribeca. Has 142,000 miles on it. Dealer has noted, on various occasions, both the head gaskets and valve covers are leaking. The engine is out and I can confirm it's only the valve covers. Should I still replace the head gaskets? They look...