In front of the oil pan at the base of the trans. bell housing is a small weep/drain hole, I've noticed a couple of oil drops coming from it. Any ideas?

 

There is a drain located on the rear of the valley passenger's side that will drip through that hole. I would venture to say you have a valley with oil.

Likely leaking pedestal, EBPV actuator, or from the front of the valley at HPOP fittings.

 

I haven't checked/cleaned the EBPV, it's on my to-do-list. How do you... or can you check the pedestal? I did have my HPOP replaced about 6 months ago. Oil in the valley can come from all three things you listed?

 

Tough to see the EBPV (Exhaust Back Pressure Valve) actuator, on the lower side of the turbo pedestal there is a rod that comes out of it to actuate the EBPV, they are known to leak there, as well as the Orings on the pedestal themselves on occasion.

Best bet would be to thoroughly clean the valley and see if you can tell where the oil is coming from. Lots of places for it to leak really.

Cleaning the EBPS(Exhaust Back Pressure Sensor) is what I think you were referring to, it is a sensor located on the front of the motor, that is fed exhaust pressure with a tube from the passenger's side manifold.

Here is a picture of a pedestal for reference, where the arrow is pointing is the EBPV actuator.

Attachment 49751

 

thanks, will investigate further

 

what about the rear main seal? what do ya think?