I'm in the same predicament, My valve cover gasket let go last night 350klms from base, oil pouring out like a waterfall onto the exhaust, the advice I have been given is that the breather hoses can collapse during use and therefore the engine pressurizes and can blow oil past the gaskets etc, that number one hose appears to connect well below the throttle body onto the inlet manifold and I cannot blow air through it from the valve cover end, it either connects directly to the manifold and is blocked, or the PCV is in the manifold and it's blocked, the large hose connects to the duct that runs between the airflow meter and the throttle body. It is clear and unobstructed. I only saved my car engine from certain destruction because I had 10 cows run out in front of me in the dark while driving at 70MPH! Almost hit a person too, I pulled up to check on the person who had been left behind by family at a roadside toilet stop, 50k from the nearest petrol station and 150 from the nearest actual town! The young girl was distraught, I managed to calm her down and took her the 150 k to town, after I pulled the valve cover and resealed it with silicone as a temp measure, then topped up the oil.On that side there are no coolant gaskets to leak into oil pan.
Pcv as far as I know, located in valve cover, but don’t believe is any.
- chain area leaks coolant in oil pan
- too short trips.
Clean throttle body where the two hoses from valve cover come.