In this video we attempted to get more life out of a 21 year old stock Toyota muffler with a hole along the weld seam. Realizing this is a temporary solution, I want to see if this putty will actually seal up the muffler and for how long (later video). The concept is sound pack a high temperature epoxy putty into the hole. The rest of the muffler is solid so we'll see how long this "repair" lasts.