Quote Originally Posted by sandm View Post
huh??......
You commented that the rear differential was in the water and you expected more differential fluid changes. The differential is a sealed unit except where it needs to have the 'breather'. Very often there's a breather hose (or you can add one). And it's a quite simple job to extend the rear differential breather line higher so that water can't enter. They even make one way valves for the end of that line to keep water out. It's a very common practice on 4x4 wheelin' rigs that see stream crossings as part of their usage. I had extended breather lines on my transmission, both differentials, and even a intake snorkel on my jeep.