After div. Try with Ölabsaugpumpen in various. Price ranges was very disappointed.
Then I read about this pump a recession, when someone on the end use of fuel oil pumping wrote.
So I bought this pump also.
20 liters of diesel fuel from a canister in a boat in the tank height of 1.50 meters (on the trailer) in 2 minutes with an electric screwdriver (Dewalt, 36 Volt, 2nd gear) is a good performance.
With water I have not yet tested the pump.