Pool of oil on driver side intake manifold?

[WarWagon]

173K on the 1993 Chevy 6.5 engine I guess. Not sure if it is the original engine.

Lots of blowby - warmed up the oil dipstick is smoking and smoke can come out of the oil fill cap. CDR has lots of smoke poring out. Blowby test not run as it is obvious that CDR system is overwhelmed.

Not sure if the oil would be from the turbo and I may road draft the system to check if it is CDR oil or turbo seal oil.

Engine runs ok and gets the same economy towing as my last 6.5 and 6.2 drop in. Hits all 8 and runs smooth.

I am getting a puddle of oil of the driver's side intake manifold dead center between the two bolts/studs. As I had this issue on a 350 gas and turned out to be from the bolts...

I am curious if this much oil can leak out of the intake manifold top to bottom half gasket and run down to puddle here or if it is coming through the intake manifold bolts?

 

[bison]

Lots of blowby result in oil pullover in the intake.any small leak in a intake gasket will let it leak out by turbo pressure.
Check the CDR if it is plugged shut,there should be unrestricted flow both ways,if that pans out,
Do a compression test.

 

[bk95td]

The higher up bolts on the intake go through to the crankcase. Lowers[closer to the valley don't. I always put rtv on the upper bolts.