I also think there should be talk of environmental protection. I think that you never get to 100%, the oil under the lawn mower out of the remaining adherent grass. At the same tractor: Here actually always something dripping on the floor. But is even worse otherwise the refilling of a tub into a canister. Not any longer longer!
Now it's easy: Open filler neck hose pure pumping. If you like (like me) can best suck warm oil, then it runs very well through the hose and makes this a little more supple.
At my previous speakers: The tube is really a bit hard, but by hot oil, this is very nice flexible / soft. The clamp on the hose is unfortunately a bad design -> from it.
Very helpful I find the measurement marks on the container. Here you can at least read about how much oil has on the motor again. I have otherwise not always ready for each device.