Coolant in the oil - AGAIN!
I'm hoping that it's just from the intake. You can pressurize the system with a special pump with a radiator neck adapter, but if it's a head gasket or intake manifold, you really can't see the leak.
I would replace the intake gaskets first and rtv the coolant passages and see if that fixes it. The white smoke is a bad sign though......
Does the exhaust smell like coolant?