I've got a Rotec R2800 radial on a Kitfox IV with an oil leak problem. When my engine is sitting, it drains a considerable amount of oil out of the exhaust stacks and intake drains. We think the oil is gravity feeding into the engine from the oil tank. It is passing through the oil pump, through the oil filter and into the engine case. The scavenge tank is filling up and overflowing into the bottom cylinders.

We are loseing almost a quart of oil a week and are not sure what to do. One idea is placing a shutoff valve in the oil line after the tank. This obviosly poses some serious problems if not turned on before each flight.

I know there are a few Kitfoxes flying with Rotec's. Is anyone having the same problem? Has anyone else solved the problem? Any help would be appreciated. At $8.50 a quart, it is becoming very costly to operate this cool engine.

Thanks
Matt