Mystery gifts from oil pan.

Sorry: Penny was just for comparison. That is kind of funny!

 

I have not been into many of them myself. The early ones had cam roller problems but I do not recall anything like that. Turned every page in the Mack service manual and see nothing like that.
In the last 5 years it had fuel in the oil. The factory locktite coating on a plug appeared to have desolved. That was in the front of a fuel rail.
The turbo was replaced last year but we did not do that.
I am leaning toward it can from the turbo. The oil probably has not been changed since then as it does not run 10,000 miles a year.
Replaced the supply pump leaking fuel into the crankcase. Checked rod and main bearings. Replaced them, polished the crank and test drove it.
It will move some equipment tomorrow.