The portable electric and drill pumps were a mess, in part because the tubes wouldn't stay put. Warm oil softened the tubes and they come off easily, resulting in oil spurting all over. Even in the best of situations they don't t work well, in my experience.

Tubes get soft for the vacuum pumps too, but the difference is the vaccum helps keep the tubes on the nipples. The permanent bottle makes disposal easy but you need more room to store it. But these work pretty neat. Warm up the oil, stick in the tube, pump and it sucks out the oil. Slick with little mess. After using it I put the tube up in the air for 10 minutes to allow the residual oil to drain into the bottle.

I had one that looked like the Moeller which worked well until I dropped it and it cracked in half in the middle of the Atlantic about the same time I learned that sea water had backed up into the engine crankcase. But that is another story.

The one I have now is similar but has a very sturdy plastic bottle, about 6 quarts, it looks like a laundry detergent bottle but thicker. I tried to find it on the 'net but couldn't so maybe they don't make it any more.