ok quick qustion does anyone know of a liquid substance i can get a home depot or auto store that can fill smal exhaust leaks? i have a custom exhaust on my 7 but have noticed that in some places there was exhaust escaping. i know there is that stuff for mufflers that grey paste but i need somthing a bit better plus i dont think it will hold up to our exhaust temps. i though about getting some JB weld and using it. im going to do this today and then let it dry and then paint it. anyone know of any good substances i could use to fix those annoying leaks. there are tiny holes where the pipes where welded together. and where the custom pipe was fitted to the downpipe when they removed the little cat there.

 

They make RTV that claims it'll hold up, but I've never used the stuff myself.

 

theres this stuff called muffler repair i think they sell it at autozone or place like that it works well i used it on my custom exhaust were the dumass missed a weld and it was a half inch big and it worked find until i had 2 chance 2 fix it.