There are only a few places the PS system can hypothetically leak. High pressure hose, low pressure return hose, seals in pump, O ring on high pressure hose or the steering box seal which is where the shaft from the steering box connects to the rag joint on the steering column. Your best bet is to not let it go to long because the pump will go out and then when your driving the truck will naturally weave. This will then cause the guy that's driving behind you to call the police and report you as a drunken driver. Then you get pulled over for hypothetically driving drunk but you are not drunk but the cop is not convinced, needs some brownie points for his chief, hauls you in for a breathalyzer test, test shows no alcohol but then writes you a ticket for careless driving so he can still get the brownie points from his chief.
This is all hypothetically speaking of course.