If you go to a PHORD dealer, go to parts, and ask for the 7.3, and 6.0 power stroke oil pan sealer, its grey, and is designed to last the "service" life of the 7.3, it is AWSOME, and sets up so well that it needs to be slit with a razer knife to get it back appart. If you try to "pop" the pan loose it WILL dent. Ask me how I know...
I have found it to be the same cost of the right stuff from permatex, but cheaper...
I have a charlies pan on my 360, I just used mopar engine rtv, and its starting to leak. When the stroker gets done Im using my ford motorsport RTV.



Kasey