Specifically formulated to soften cured RTV and residue left from multi-layer steel gaskets. Allows removal of gasket residue with a plastic or wood scraper. Safe for aluminum and cast iron gasket surfaces. Assures a safe cleaning process without risk of damaging the sealing surface. Eliminates the need for metal tools or abrasives for removing gasket residue. Only Ford-approved product for removing multi-layer steel gaskets and RTV. Note: As described in TSB 02-11-4, this product is designed to be used with Motorcraft Metal Surface Prep, ZC-31-A.