Checking for Exhaust Leak.
 

Anyone know a good way to look for an exhaust manifold leak on the WJ 4.0? Someone's always got a special trick for something like this..

Told ya in the other post, vaccum induce a bit of seafoam lol. Don't stall it though. It'll smoke like hell so be in an open clear area, this is what will indicate a leak- smoke anywhere but the end of the tailpipe.

I would use automatic trans fluid..