smoke from the engine compartment - transmission ?

[850forum]

In addition, crankcase pressure can force oil through an old, hard seal on the oil filler cap - top of the engine. The oil eventually runs off the top of the cylinder head (towards the back of the car), runs down the backside of the block, and all over the exhaust and turbo, making a terrible cloud of smoke.

Top is clean. The cap seal has been replaced at least once.

[850forum]

There is a bleed screw way in the back of the engine ( technically the right side of the engine) but that’s on the suction side of the water pump so no one uses it. Too hard to get too. Top off, short trip, top off, run hard, top off final.

Awfully wasteful of time & messy leaks to have to depend on burping it.
I want a tall tube that threads onto the tank, so nothing actually leaks out.
Wonder what the thread size is.