Jim Macklin wrote:
The engine is old, nearly ten years, check all the seals and
mating surfaces. You only have 900 hours, but that is less
than 100 hours a year. Corrosion in the cylinders and blow
by, and oil being sucked past the ring into the combustion
chamber are all possible, Check valve guides and seals,
differential compression and if available, borescope it.
Higher oil pressure would increase the leakage, but not
effect the valve guides or rings. An oil separator will
only help if the oil is going out the breather tube.

The only place I'm seeing any oil is at the breather. I had a full
prop/gov overhaul last year and they replaced the front engine seal. I
wasn't having any problems with the prop, I had it overhauled because
oil was leaking from the gov. Now I think I've got a clean enough
engine that I can actually tell where the oil is leaknig from.

-Robert