Permatex Silicone Ultra Grey 3.5 oz.

Based on our decades of experience building engines, we highly recommend coating the surface of most gaskets with Permatex Ultra Grey RTV Silicone. We've tried practically every name brand and formulation of sealers out there on the market and nothing beats Ultra Grey. Use on oil pan/windage tray gaskets, timing cover, valve covers, water neck, water pump and housing, etc. Don't forget to throw one of these in when ordering gaskets.