What tank preparation is required before using US Standard Gas Tank Sealer?
• If tank contains sludge, gums, varnishes, or rust due to years of neglect or non-use, it should first be cleaned thoroughly with POR-15 Marine=Clean to remove all foreign matter. • Mix 1 quart Marine=Clean with 1 quart hot water, put in tank for 24 hours and agitate frequently. Repeat process until tank is clean. • Next, use POR-15 Metal-Ready to etch inside surface of tank and to remove all rust. • Next, rinse tank thoroughly with water several times to remove all remnant chemicals and let dry. • Tank must be completely dry inside before using U.S. Standard Gas Tank Sealer. Should I always use a Gas Tank Sealer after thoroughly cleaning out my tank? No. Gas tank sealer should be used as a last resort, and is not always necessary. Gas tanks that are rust-free and have no pinholes or leaks may not need sealing at all. They should, however, always be kept full of gasoline, which prevents condensation and further rusting. If vehicles are not used frequently, gas tanks should be treated
