Here's a little helpful hint....If you have room in the cowl under the engine, find a tiny tank, or use a small asprin bottle, and fit it with a tank plug. use 2 lines, fit one with a clunk and inside line. Run the vent tube from the engine crankcase vent to the vent tube in the small tank, and run a piece of fuel tubing from the clunk line to where you can access it. When you are through flying for the day, pump the spent oil from the catch tank, and dispose of the gunky stuff properly. You would be surprised how much cleaner your plane stays, and how much easier the clean up is. Oh yeah, clamp the catch tank to the firewall, so it does not flop around inside the cowl.

Bill, AMA 4720
WACO Brotherhood #1