An Old Problem - Maybe

[K98AL]

This has gone on for a while, I even had an old motorcycle that would do the same thing...
Blow-by tube "leaves its mark" most places I go. Brownish- foamy looking spots of goo. Sometimes pale, sometimes more brown. Some water, I believe.
Truck runs great, just wondering what I should expect to come unwound.....
Anyone able to explain? Thanks!

[63burban]

Moisture in the oil, check your cooling system for leaks, need fresh air coming into the engine, do you have a vented oil filler cap or other way for air to get into the crankcase, engine not getting hot enough or combination.

[K98AL]

Ahhh - I do NOT have a vented filler cap. That makes sense to me now.

Thanks for seeing what I was staring at and didn't see!