Are you asking for a portable system to change the oil
, or an installed system for changing oil?
I've see installed systems you literally position a valve, pump the oil out, flip the valve and pump new oil in.
I use a vacuum container like this one, but a little higher capacity, I think 6 L
These are different, but more expensive options
OK that didn't work, go here and enter oil change
pumps in the search
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