I was able to get the engine up to 90*c today and still no leak to be seen. I figured that the higher temp would open up the oil filter housing thermostat and give me some answers. This is a mystery that probably won't get solved until I get the engine out. I did a second check on the PCV and air filtration system and checked the oil feed to the injector pump.

The good news is that I bought a 1983 300SD beater with a good engine and decent transmission in it today for $750. The engine had good pep and minimal blowby. I'll get started on pulling that engine tomorrow and start a new thread on the swap.

__________________
'81 300SD