I wanted GUN GUM test times and am now convinced it's worth after a week! The weld on my muffler was partially rusted away and the final pot leaking by! The exhaust warmed up and to clean sticky place tidy with a wire brush and sanding fleece, dannach the paste nicely thickly! The car does not move 24 hours, and now visible after a week no change, the exhaust is tight! Was already good speedy 300km on the highway. I would say for small cracks and holes without mechanical stress ideal.
