Importance of PCV and what happens without it.

I forget what the temperature is......180 I THINK. but if it does not operate at X temperature for X amount of time, all the moisture will not be boiled out of the oil and you will get what you are experiencing. This is why short trips are not good for cars.

^ this, and also why thermostats shouldn't be cooler than 180 and SHOULD be used. But hey, all those that run without them or run 160 stats on the street help keep the demand for new parts alive, helping the rest of us out with cheaper prices (sometimes) :D