Mr.T

The oil light flashing indicates near zero oil pressure, which could have damaged the bearings -- And the sound in the video could be bearings. If the knock started about when the oil lamp was flashing, or shortly after, odds are that the lack of oil pressure caused it. Oil analyses, checking oil pressure, and dropping the oil pan are what come to mind for troubleshooting. This seems like it's going from bad to worse.

Oil consumption that causes the oil level to get below the oil pump's suction pickup is a classic engine killer. Especially likely to happen if there's an increase in consumption.

Rmbauti405

Little update and end to this thread. Dumped some seafoam in the oil just for shits and giggles ran it for 200 miles and drained it with the intentions to pull it all apart and see what's going on. Oil had plenty of goldish and silvery medal glitters in it. So, rings it is. Been running it many many miles with this issue now. So this motors done. The price for machine work vs a new long block is a pretty obvious decision. So by the end of the week it will either be traded in or a new long block ordered in I haven't decided if I want to deal with a 3.8 again or just get rid of it all together. Dont have the funds for a swap so... anyhow thanks for replys to this thread. And good day to ya.

Mr.T

For a used 3.8L, try calling Motech in Las Vegas. They do the LS conversions and I'm pretty sure they eventually sell most of the 3.8 & 3.6 engines that come out.

Rmbauti405

Recommendations on new long block?

Mr.T

I'd search and check reviews, check local shops and see what they would use.

Rmbauti405

Goin with new mopar heads and a local shop going to rebuild the shortblock for me.

Rmbauti405

Rmbauti405

Every single crank bearing was destroyed in the old motor.

gks'jk

You are not alone on this, the 3.8's had a serious drinking problem due to sticking oil control rings. The worst part is Dodge knew about it and it should have been a recall in my opinion. Mine suffered the same fate, and after many trips to the dealer they agreed to do a oil consumption test by sealing the filler, dipstick, and drain. I had to bring it back every 500 miles so they could check it. It failed miserably and they tore it down and replaced the rings under warranty.
The service manager admitted they all have this problem but they had to follow the test procedure and use more than 1 quart every 1000 miles anything less is considered "normal" total bullshit IMO. Good luck with the rebuild!

gks'jk

The manifolds are another issue for the 3.8's but not related to the oil consumption, the egr and cats could definitely be from the oil issue, but good luck getting the dealer to do anything about it, especially if the work has already been done. I would do the test yourself first and make sure it's using more than a quart every thousand miles, if it does they should take care of it.
For the warranty, make sure your five year inspections have been done and documented. I had mine canceled because I had a dealer do the inspection two weeks too early!