FUEL TANK REPAIR is more than just pouring in a quart of sealer and sloshing it around. If gum, varnish, sludge, or fuel are inside, they must be removed first. Our U.S. STANDARD TANK SEALER™, like all other sealers, will not work in a contaminated tank. Find out what the pros already know... our FUEL TANK REPAIR KIT has everything you need to do the job right! Kit Contains: MARINE CLEAN™ to remove gum, sludge, varnish METAL READY™ to remove rust & prepare tank for sealer U.S. STANDARD TANK SEALER™ to permanently seal tank DETAILED INSTRUCTIONS so you'll do the job right.