For what it's worth, I was shown a better way to burp the oil on a 912ULS by my
inspector Toby Wilcox today. Instead of many rotations of the prop, just turn
slowly until resistance is felt, and hold it there until the resistance goes
away - then repeat as necessary.
The crankcase is pressurised by cylinder compressions leaking past the rings and
into the crankcase, so this method not only avoids /reduces un-lubricated metal
parts sliding against each other (such as e.g. cams) but it actually takes
considerably less effort or time to 'burp' the dry sump oil back into the tank.
Try it!
Clive
--------
Live as if you were to die tomorrow. Learn as if you were to live forever.
Mahatma
Gandhi
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