• Before doing any sort of plastic repair, use Super Clean plastic cleaner to maximize the durability of your repair. Super Clean plastic cleaner removes mold release agents, wax, grease, silicone, tar, undercoating, bugs, sealers, sticker residue, and other contiminants from painted or unpainted plastic or metal surfaces. It's simple to use; just spray it on and wipe off with a clean, lint-free cloth. This gallon can of Super Clean contains 128 fl. oz. (3.78 liters) of plastic cleaner.