I have a 2001 Ram 3500 dually with Cummins 5.9 auto - just about 260,000 miles with no issues to date, except I took a dealer's bait and brought it in for a $39.99 Diesel oil change. After waiting for 3 hours they finally finished it up and was on my way. I ran it for a couple of days on a trip worth almost 2,000 miles. Upon my return I noticed oil pouring from the engine. I immediately checked the oil and to my surprise it was over an inch above the full mark yet. Took it to my regular dealer and they ended up replacing the camshaft cover and gasket, Also they drained the oil filter twice to get down to the full mark on dipstick.
Dealer 1 denies that over filling the engine would/could not cause that type of damage, or any damage for that matter. Their records show 12 qts added; my book and past experience says 11 qts for engine & filter. My thoughts are the mechanic accidentally added 13 qts which is the requirement for the 6.7 oil change. This would account for the amount dealer 2 drained plus what was left on the ground.
To me, the 2 qts extra oil for the 2,000 miles caused extra oil pressure to build and it took the easiest way out in what may have been a tired gasket on the cam cover.
Anyone have any thoughts?