How to change F & R Differential fluids

[Olfart]

Originally Posted by Hummerguy32

does the gaskets need to be changed on the diff's or do you use rv stuff to spread around the gasket area for a good seal? Also can i do it on a lift or does it have to be on a slight incline/decline for the oil to drain all the way out? Thanx in advance

since you are only going to remove the fill and drain plugs...I Hope ....there is no need to seal the gaskets since you won't be splitting the case