I am replacing my thermostat housing this weekend along with my "head gasket" and my manual says to put OMC Gasket Sealant on both sides of the gasket.... I don't have any OMC Gasket Sealant but I do have a tube of Permatex Black Sealant(RTV) that I used on my truck intake gaskets. Could I just use what I have or do I need to p/u some OMC Gasket Sealant?