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Just did the plenum swap over the weekend. That pc of gasket laying there was actually broken off after we opened the plate. I didn't have any missing chunks of gasket but the gasket was bulged out as you can see and obviously that is quite a bit of oil. I can't imagine that much oil could come in through a pcv valve but I may be wrong.
I'm no expert on this matter but I do know that is where my oil is going!
116k miles, 1.5 qts/800 miles.
mine was buldging out in 6 spots and had oil pouring out when i pulled it at 153k but i think it's been blown for about 3 years.replaceing with an ebay plate still having troubles finding a torque wrench that will hit the 84in pounds i have 3 and none go low/high enough