Just did some general maintance on the motor in my car and it included changing a pcv valve.

When I removed the factory one there was about 1/8-1/4 inch of built up goo oil carbon sludge ****.

I do not burn any oil between changes either... still perfect level when it is ready to change every time, without adding any oil.

Bad or good, not sounding good but it could been a while since it is been changed.

Is there anything (not miracle juice fix it **** or whatever they advertise on tv) that can clean out that kind of built up nasty... heard a tad of atf will do it cause has a detergent in it to keep all **** in tranny clean.