Back shaft might leak a little. You can jack up to help. Front will leak more. Not sure if jacking up will help totally.

Before doing anything, make sure you can get the fill plug loose. Bad deal to drain first and find out it's stuck.

Filling isn't hard. The trick is to get a piece of hose to fit the end of the 1qt gear oil bottle. It makes it infinitely easier to squeeze and fill.

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com