Re: Breeze tonight, Gale tomorrow?

[Buccaneer]

quote FrankR:

Yeah, common in small OMC motors, it acts as a rotary valve that opens when there is pressure in the lower crankcase section and suction in the upper section. That difference in pressure causes oil to flow up from the bottom to the top main. Most such engines have a small exterior hose or tube for the oil transfer.

I guess this system of crankcase pressure differences moving the oil would
not work so well in a single cylinder!

Prepare to be boarded!