I understand that the turbo does not have a PCV valve or system like the 200 series which I am most familiar with. I see the rubber tube comming from somewhere in front and down below up to a point near the oil fill cap. Is this the hose that should be checked to make sure it is clear? How do you check this hose? There is a joint in the hose at the top, but is looks like a molded, fused connection that should not be seperated. If this hose is blocked would it cause moisture in the crankcase and cause the milkshake color on the end of the dipstick. I am hoping I dont have a blown head gasket. The coolant level seems to be staying constant.