TriniLex

So I noticed lexus suggested I change my half moon seals (reseal with FPIG toyota black gasket maker) when I do my valve cover gasket.
I have never done this in the past with any lexus I have owned.

Has anyone done this when they redid their valve cover gasket?

Question 2.
Did you replace or re-use your intake plenum gasket?
Lexus said they don't change that on a routine valve cover gasket replacement?

JoeInHNL

When I replaced my valve cover gaskets, I cleaned off the old RTV and used new RTV in the area of the half moons. I did not remove or replace anything else. No leaks.

I replaced the intake plenum gasket. The old one looked fine and probably good have been reused, but if I was to do it again I would replace it since I would not want to risk having all the rework if it leaked.The Lexus shop manual says use a new gasket.

leroyjnav

I just ordered replacement VC gaskets, and just saw your post on half moon seals, what are they? Do they need to be replaced?
Thank you.