I have a few mowers and other equipment that need an oil change. Last month I relied on gravity and an open oil opening to get oil out or I used a clear tube attached to a suction bulb (like what is used to drain aquariums.) Both worked, but both were also slow and messy. I'm looking for a much easier way to do the oil change this weekend. The only idea I have is to use some type of rotary action pump maybe? I'd like to NOT have to take the bottom oil drain plug out, but rather go thru the oil filler hole. Any good ideas out there?