My 2002 RAM 2500 Diesel is going into the transmission shop sometime in the next 10 days. More than one of the transmission cooler lines are leaking at the connections. I do not like the shove together fittings and stay clips. This stuff is clearly designed for easy and quick assembly line and probably not for longevity.
This truck has an oil-to-coolant transmission cooler backed up by an oil-to-air cooler. This truck has more lines than Uncle Miltie.
https://youtu.be/zxB-LGQbaEY I had the transmission rebuilt about three years ago because the torque converter lock-up clutch facings were detached and not releasing. The replacement TC has a lower stall speed. The modified shift holds the gears longer then shifts "firmly".
A local Auto recycler (wrecker) does Diesel conversions with CUMMINS. I was told that a 7.3 Power Stroke was the better engine choice. An engine is no better than the systems that support it.
This Cummins Ram has been very reliable, so far. I have a new 5.9 24 valve in our shop. If I live long enough, I will put this engine put this Cummins in an IHC pickup. Over the last decade I have collected an NVG4500, NVG241dld and a pair of DANA 60s for this project.
I liked the sound of the 6.9 and having that engine in our R120 got lots of attention. The engine was reliable, under powered and like to leak oil and mark it's spot. The economy was very good. This great lump of an engine weighed in at about 1100 pounds.