Quote Originally Posted by EK Hotch
I agree with AnthonyF, I believe it's probably your valve stem seals. There's a lot of vacuum on the intake side(like 20ish inches of hg.) and your valve stem seals are supposed to keep the oil in the head and vacuum in the port. Your engine can and WILL pull oil past the intake valve stem seals if they are damaged or worn especially if they are cold, causing oil to get into the combustion chamber which will burn and make nasty white smoke.
First off, know your colors out the tail pipe. White is coolant, blue is oil, and black is an overly rich condition. I DON'T agree with Anthony. So that non sense about the valve seals is irrelevent to the situation at hand. Like I mentioned before, that is coolant, not oil.