I have searched high and low for information on this with no luck. I am replacing the gaskets on my 95 z28 intake manifold. I am not sure what RTV to use. I have been eyeing the permatex ultra copper and ultra black. I know the black is good for oil obviously and the copper for high temps. What do you all think is best for the rear and front wall? Thanks

 

Ultra Black

 

Hi Temp ultra copper is my favorite. Ultra blue or black will work fine as well. I have a tube of each in my box.

 

Always used ultra black for my cars, never had any problems with it, except when I screwed up the bead and thought it wouldn't leak. That's my own fault though, not the utra blacks.

 

Thanks.

 

i use copper stuff, make sure you get it right