Thank you for sharing this brother I have a 18 L5P just hit 240k miles and I been hearing that squeal for the last couple of weeks I used for HotShot as well Glad I saw your video cuz I have the scenario same spot same black thing this video that you made same here lol I thing am just gonna replace the Gasket just for the miles I have on it and what am using it for
My 21 did this at about 20k miles. Dealer said they found 2 broken manifold bolts. Pulled manifolds extracted bolts, new gaskets. Back at 34k but worse. It does not affect driveability. My best description is it sounds like a hyper cricket. Finally going in Monday at 37k for 2nd round. This is covered for 100k under emissions warranty.
@@codymullican1988 generally can go quite a while before it blows out exhaust gasket completely. If you’re only hearing it when coasting with exhaust brake and it’s pretty faint, I personally wouldn’t stress about driving it a few thousand miles, just don’t use the exhaust brake more than you have to. I’ve done much more with mine. But, if you hearing it and it’s very loud when accelerating that may be a more immediate problem.
@@bretshook6263 no, the studs are backing out of the head. And I don’t think loctite would make much of a difference with the temps the manifold see. I also don’t want to end up with a stuck stud
I was just thinking/reading up on these: $1,300.... PPE HIGH FLOW EXHAUST MANIFOLDS WITH UP-PIPES 17-22 DURAMAX L5P. Not sure if it's worth the money to upgrade before I hit 100k miles on my 22 Dually, I heard that's when you start having issues....
We’ve had them leak around 30k 60k and 100k. We have started using the exhaust brake a lot less and that has made a pretty big difference on keeping the sealed up. My opinion is them reducing the stud size is what’s the issue. I also tighten them a lot tighter then GM says to
