Bax,
I'm sure you have answered this question before, but I can't find it. :^)

What is your recommended after-run procedure for the OS Four Strokes?
My procedure is, after running out fuel, pump in "Marvel's Mystery Oil" in through the crankcase vent and turn engine over several times, until I see red oil leaking out the front bearing.
Is this OK ?

Thanks
Shepp

Your system would be just fine. With four-stroke engines, people usually don't get enough oil into the crankcase, and we see a lot of rusty cranks and bearings as a result.