Car is '86 Turbo Z with an '88 intake, T2 turbo, '88/'89 air box with internal BOV.
I know it's not coming from the PCV system. There is no oil in the air feed line from the valve cover. But...
There is oil in the air feed to the turbo. I've decided that it's source is the hose from the tube/hose from the turbo to the BOV. I don't understand this at all.
I looked at the oil on my finger and it's dark which may mean that's it is new and not from when I filled when I changed the oil. I know there was some before I totally cleaned out the air feed hose to the valve cover as I could see it in the hose and in the air box which then was found on the little white filter inside which filters the air to the valve cover. Today I found no oil on that filter or the hose but there was some oil on the bottom of the air can.
I then pulled the hose which feeds the BOV at the bottom of the air box. I found there was evidence of oil in hose.
I think my next step will be to remove everything... hoses, air can, tubes/hoses from/to the turbo. I'll wash them including the BOV and blow out all water or whatever I use to wash these parts. I'll also wash the turbo. I may spray some carb/TB cleaner into the turbo to loosen up any oil that might be caught in the turbo. From there I'll insure there is no oil anywhere that might cause smoking and I'll let it sit to dry well. Next I'll put it back together and make a run till it's warmed up. If there's oil in the hoses or air box after this, then what? A turbo seal?