Seems like:

a) a waste of fluid
b) messy and dangerous (if you spill it on sensitive body parts)
c) you would have to drain the overfilled system
d) a waste of time walking to the store 500 meters away to get fluid and a handpump
e) you don't get to stay dry and warm in the cockpit

So what are the advantages of your method? :}

We don't generally see an overfilled system. That kind of puts the rest to bed.

a--If we need fluid, we need fluid. We don't see overfilled systems, so if we need fluid it's because we're short in one , system.

b--Bigger danger slipping while filling. Don't spill it on sensitive body parts. Same applies for a lot of other things, including the hot coffee upstairs.

c--Not a problem, because we generally don't see an overfilled system.

d--Our store is onboard, and the airplane comes with a built-in pump; it's part of the hydraulic system at the refill point in the left body gear well.

e--There's a lot to being said for staying warm and dry, but it's really neither here nor there if the airplane needs servicing.

Guppy

No one is advocating "servicing" the resovior using the method described ie topping up a system that is at 70% from a system that is at 100% although it might work in a pinch. What they are describing is transfering the fluid back to its original system because over time it has transfered to the other system ie one is at 120% and the other is at 80%.:ok:

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