Sorry about the triple posting, Stebrich, I think if there's water in the axles the oil will be murky, when i drain my the first time, it didn't have any water in it. Read your manual for the type of gear oil to put it in. yes i'm talking about the tube on the passenger side, it's hook up on the inside frame below the battery. follow the tube from your front axles upward and you'll see where it's connected to.

 

I drained the oil from the front diff, it was not creamy looking but was told the heavier oils like 80-90 dont get creamy looking. It tends to get foamy. So i went to local dealer and they said it is somwhat common, and it is the vent tube and the vent itself. Just replace the tube and the vent, and that should fix it.