It is a mityvac. Probably an older model. It has a T handle directly coming out of the reservoir up top. Capacity is 6.8 liters (I think).
It is just so slow. Took forever to suck everything out. Then again it was 8.4 quarts of oil and I had to empty it once. I find part of the problem with using these things is the length of the suction tube - they’re not long enough to go down that dipstick tube and allow the MityVac to sit on the floor - so I have to put it up in the engine compartment and have it lean on it’s side between the radiator and engine. It’s not ideal. And because of the angle, the tube that attaches to the vac tends to bend and wants to come out. I know you can put extensions on the vac tube, I don’t have it. Maybe that would make it easier.
Now I do have a few at my shop...one air driven, but it quickly developed issues with the on/off valve. And it seems to have lost suction over the years (3 years old now). But it wasn’t a ton of money...maybe $150? I can’t remember.
Makes sense its slower on the one step of getting the oil out- the drain plug has a diameter and gravity advantage.
Whats the "door to door" time of the total task comparatively though?
I pick up speed overall by skipping steps
Dont bother changing from normal clothes.
Dont have to raise the car for OCI only (I do 2-1)
Not getting a blanket out, putting it back
Not getting under a car twice
Not getting a socket set and new crush washer out.
Not getting a torque wrench out, and putting it back (for those so inclined)
Not cleaning up spill across crossmember, or removing aero
A drain pan only has X amount of volume as well, maybe more, but its still got to be emptied.
I only use the small attachment and can get a 7 quart sump out of my titan in 15 min or less.
In the end for me, the advantages are many over pulling a plug. YMMY obviously.
I can feel the tube hit the pan with plenty of room left over, but those are the accessories I got, maybe the new ones are shorter.