3M Silencer Coating The exposed surface of your silencer, under the car, brushes against bad roads, and stones and is splashed with muddy water causing the silencer to rust and leak. Treatment increases the life of the silencer. The silencer also acquires diesel wash resistance and performs better at high temperatures. Silencer coating insulates against heat and cold and prevents. It also provides protection for all clean and metal surfaces. It forms a protective coating without flaking.
