These people use fluid transfer pumps for everything from oil changes to filling transfer cases with fluid. A lot of cars make fluid changes easier by having fluid drain plugs on their engine oil ...

Take, for example, the Milwaukee M18 Transfer Pump, a similar product to the Milwaukee Stick Pump. It's not immediately clear what this thing is even for at a casual glance; it kind of looks like ...

The oil was contained to a small drip on ... He explained that since the pump rides the mainshaft of the transfer case, it has to float in the rear housing. Over time, the five knife-like edges ...