Greetings..and..Transmission

[GeoHacker]

Is it OK to fill up the transmission and transfer case with the gear oil before installing them back? I know it would add some weight, but seems easier to fill while outside the vehicle, long as I keep the assembly parallel/level as when in the car.

Manual says caution: add oil after installation, but not sure if that is a caution note as to oil itself, a reminder, or if it needs to wait for some reason.

Thanks for any input.