Transfer case oil change question

[Ryan Graham]

You need a fluid transfer pump of some type. I just did mine (at 19K) and it came out pretty dark. I used synthetic fluid and am probably going to increase that interval to every 10K to make sure it lives to a ripe old age. I also did the diff's. The front was pretty clear and the back wasn't to dark but obviously had some wear particles in it. I would recommend doing your diffs now. They're pretty easy (drain plugs and fill plugs) and take about 5 quarts of synthetic fluid.