New BMW G650X (merged) threadfest...

[DESERT SCORPION]

The parts fiche calls hose #4 the oil return line. I assume this means return to the tank. The long metal line is called the inlet line. Again I assume this means engine inlet (or supply). One might be able to verify this with the heat from the oil returning to the tank from the hot engine. I would try this. From cold, start the engine and feel the heating effect at the two elbows near the bottom of the oil tank during warmup. The one that warms up first and that gets the hottest is the return line from the engine to the tank. Good luck.

THE SCORPION

[Bli55]

Originally Posted by DESERT SCORPION

One might be able to verify this with the heat from the oil returning to the tank from the hot engine.

Oh,of course!!
The simplest things are often the most genious...

The fiche is what also confused me, because part 4 is called return hose...However if would be more logical that the scavenger pump picks up at the bottom of crankcase, which is where pipe 9 goes...

It seems pipe 9 gets warmer first, but access is v. restricted, so hard to tell exactly.

[Bike#8]

Originally Posted by Bli55

Impossible!
Both tubes enter all the way down in the lowest "growth" of the tank, and you can only see so far through the filler neck...

You are right. I saw the inflow when I was refilling the tank after a oil change. I did check today and saw oil spitting into the tank from the top tube.