crankcase

If you submerge a diff or crankcase those have to be drained and redone as well.

Combine egr with pcv, which directs positive crankcase pressure into the intake, you get an oily sooty mixture caking inside the intake.

In effect, this is two 5-cylinder engines sharing a common crankcase and crankshaft.

Feel free to put a few quarts/litres of 10W-40 in your crankcase, however.

Especially after heat cycling, and taking on all the garbage that gets past the rings, and all the moisture that collects in the crankcase.

Basically, the idea was the rotors would force the fuel / oil mixture out of the crankcase and keep the spark plugs from fouling.

My particular problem du jour: some parts internal to my lawn mower engine crankcase self destructed and the engine needs a total rebuild or replacement.

There is no crankcase compression, instead turbochargers are used.

I kept my motion slow and deliberate and carefully refilled the crankcase.

The basic crankcase-scavenged two-stroke suffers from both problems.

[0] Also somewhat analogous to a crankcase position sensor on an internal combustion engine.

I once accidentally dropped a feeler gauge down into the crankcase of a Kawasaki Ninja that was practically brand new, while performing its first scheduled valve adjustment.

Because they use forced induction, they don't use the crankcase for scavenging and thus have a "normal" four stroke style oil sump.

What was then called the "lower crankcase member", which was also the lower part of the transmission housing, we would refer to as an oilpan.