I recently tried the antifreeze method on a Saito muffler myself. It didn't work so well for me. Lots and lots of elbow grease was required. Even had to pick at some hard deposits with a dental pick. Left it on overnight just like was recommended. I dunno. Just didn't work. Does it have to be new antifreeze straight from the jug? Cuz it wasn't. [sm=rolleyes.gif]