So I finally got the gasket for the egr plate, got it on, and after running the truck I'm still leaking. Not as much, and it stopped about a minute after shutting the truck off, but now I figure I have to take the plate off and apply some RTV. Wishful thinking that I wouldn't need it.

How should I apply the sealant? Both sides of the gasket? Around the bolt heads?

Will the Napa high-temp RTV I work?

Thanks.

 

i would use jb weld if you wont take it off again rtv might blow out if it gets hot enough.

 

I have seen that high temp RTV used as exhaust manifold gaskets and it seemed to work just fine, I have never personally used it just seen it on cars that came in to get work done.

 

I've used ultra copper RTV on all my exhaust gaskets, except the manifold to head gaskets. It works fairly well.

However...

You shouldn't use RTV/FIPG on a 3VZE EGR valve gasket. Because the cold start injector is positioned so that it sprays fuel almost directly at it. RTV/FIPG and other silicone based sealants are not gasoline resistant(should not be used where it may come into contact with gasoline).

You should use a gasoline resistant sealant instead in that case, of which there are many.

See here.