Yeah, it should be a dark thick oil not red at all. That is probably why he sold it to you so cheap.

You can use either the same lube in your front and rear diff as the center diff.

You should go ahead and service all three. Those are the main parts of your 4 wheel drive. They are almost bulletproof if you keep the fluids fresh and filled properly. Very expensive if you let them go.

 

yeah i dont know if it was the wrong fluid but it was like a redish brown color not thick at all i just added 70w140 synthetic and it was totally different from what it came out.

 

i just did all three, and the one in the front was kind of bluish color, nice viscosity and didnt smell bad, but the rear one was milky brown and it smelled like a strong burned fluid, i tried to flush it till the new one came out but i dont know if that was the right way to do it, so ill guess ill drive it and change it again

 

The milky is water. The source is condensation, or water thru the vent tube that leaves the banjo bolt of the rear axle, and goes up toward the transfer case. The vent tube can be cleaned out, along with the banjo bolt, which can clog and not vent.