How is the Two Cycle Oil getting into the engine oil sump?
 
Bob Perkinson


Bob,  I think the oil/fuel mixtur is injected into the combustion chamber, than comes the compression cycle, when some of the mixture bypasses the side seals and ends up in the crank case. The fuel vapors are blown overboard and only minute traces of oil are left behind. Multiply it by few million repetitions and you end up with extra oil. That’s my theory?
Bulent
 

Buly could be right but another possibility is that the side housings are getting a double dose of oil (one from normal oil system & one from premix which precipitates out when fuel evaporates in chamber).  The oil control rings are designed to scrape off excess oil and recover it to crankcase.

 

Tracy