Rear cover
Do you tow heavy loads? Could be the rear cover leaking.
what is this adapter/area for? I believe your referencing the cover plate by the down pipe, which is held on with two bolts. I believe I have a leak from this cover. I have coolant coming from this area rapidly, and cannot trace if back to head gasket, egr, turbo, or this rear engine adapter water cover gasket.
I parked yesterday after a quick material pick up, with a 2000# trailer, and smoke started pouring out of the hood. the coolant seems to be coming from this cover (still trying to narrow down exact area). I am curious what this is even for??? Entire underside of truck is wet with coolant, and its dripping from the passenger side, bottom corner of the bell housing. It is coming from above this bell housing area (from what I can see laying on the ground). It doesn't seem to be coming from EGR, or head gasket (atleast from what ive seen so far). when the truck runs, it pours out from something, and stops when the truck is off. the truck only has 110K miles. Is this adapter cover known to leak? Temps have been in the low teens, sometimes single digits at night, the past couple days, and I have noticed a decent amount of white smoke from the exhaust, but it clears up when truck is up to temperature. I am also plugging the truck in at night, and it white smokes for a half mile or so in the morning. No pressure from the overflow jug cap, and the radiator hose is still soft.
Could a leak from this cover / gasket, leak this much, to soak the underside of the truck? It seems to be coming out, and contacting the oil pan and exhaust and that's creating the smoke / steam from the hood. Also, the white exhaust smoke is definitely diesel smell, not coolant.