So, how can we efficiently unload fluid wagons to completely fill a station, given that the pumping speed drops significantly once the storage tanks reach approximately 15k units of fluid?

Hey there, I've found some undocumented behavior with pumps:
The pump's speed appears to depend on the relative fluid levels between the input and output connections. When I tested this using "Infinity Pipes," I noticed that even with a 100% full input pipe of Petroleum Gas and a 99% full output ...