15kw Onan Crankcase Ventilation

[Capt Chad]

We can't find where the crank case is ventilated on my 15kw onan. The reason I am looking is an intermittent oil use issue. I am suspecting an intermittent crankcase overpressure. Sometimes it uses no oil in 48 hours. Some times I am pouring a gallon of rotella in the thing at 0200 in my boxers after 24 hours of run time. It's quite frustrating.

 

[rsmith]

What's the model # most are vented into the intake near the glow plugs air is drawn into thru the filler dipstick tube