For clarification:
The Vapor Condenser I built condenses the "heavy" crankcase vapors (fuel blow by?) and allows the rest of the vapors to return to the intake via the turbocharger. From what I have seen and collected, I would not want the condensed vapors to return to my oil (unless filtered very well). I currently have 400 miles on my oil change with an impoved condenser and there is only a slight discoloration to my oil. Previously, it would be quite black by now! At 1000 miles, I will check the oil color and condenser for contents and post.

I want to take task with those who say that what turns our diesel oil black is sulphur. So, what turns a gaser's oil black? That I am aware of, there is little to no sulphur in gasoline. Soot is carbon. Be it diesel soot or gasoline soot, the carbon will turn our oil black.

From what I know, I believe the following:
1) "soot" is the heavier carbon molecules that did not burn during the initial combustion and little or none of it will burn when it is recycled again via a PCV or CDR.
2) I believe most of it is exhausted on the exhaust stroke but some of it ends up in our oil exactly how I am not sure and have not read anything on this either - blow by most likely.

Why do I say the above?
1) Catalytic Converters:
What does the catalytic converter do - diesel or gas? By catalytic action the "material" (noble metal?) in the converter, acting as a catalyst, breaks the unburned heavier (longer chain) carbons (fuel) into smaller molecules and burns them. On later model engines, gas and diesel, extra fuel is dumped to the converter to help it ignite and burn the unburned fuel and polutants.
2) My 92 Ford Ranger gaser with 86K miles, 4K miles on the current oil change and a condenser, has only slightly discolored oil! Never done that before!
3) Engines rebuilt with total seal rings do NOT get black in their oil! Or, at least not as quick or as black.