Changing the oil in your general aviation aircraft can be tricky.
That’s because many oil pans and drain plugs are “perfectly” located above the nosewheel mounting system or some other frame structure so that it is almost impossible to get to the drain plug without burning your hands, as well as spilling oil all over the frame and floor.
A quick drain valve helps some, but still many mechanics will wait until the engine cools off to remove the cowl and try to drain the oil. And they still spill some oil and need to clean up the plane and the floor around it. This requires extra time and expense for cleaning solvents, as well as the chore of disposing of the cleaning solvents.
Many years ago, a friend of mine came up with a system to suck the oil out of the dipstick tube. It is a relatively simple system and should work well for aircraft.[Read more…]