[GEORGIA DIESEL]

Might want to look at the drip on the end of the tube a bit closer, see if there is any coolant in it. When a head gasket starts to leak the water getting in the oil will steam it's way out the breather and looks like a lot of blowby.

 

[GEORGIA DIESEL]

He means to use a clear piece of glass or plastic in front of the vapor to see if it steams up, meaning there is moisture in it. Your breath will do the same thing on a mirror.