Oil change, where's most of the oil drain from? Case drain or Sump tank?

[H.G.P.]

Wondering if most of the oil (or equal amts.) is suppose to come from the oil tank or the bottom case/drain? Does it matter? 69 911E.

Thanks

[bruni911]

s

[Henry Schmidt]

When you first shut it off, there should be more oil in the tank.
As it sit the oil will drain from the tank into the bottom of the engine.
That is why some engines leak when they sit but not if you drive them. This is especially true about oil return tube leaks

[H.G.P.]

Thank you Henry very much!