W900 Differential capacity

Ive looked all over and cant find anything. I changed my rear diff fluid today and it took about 3-3.5 gallons.

I cant find anything on the front and rear capacities online? I didnt do the front yet as im headed to the dealer tomorrow morning to get a carrier bearing and im gonna ask them.

Truck is a 2016 w900 glider....but, KW done everything on it except the engine.

Anyone know the how much fluid each should hold?

 

This is what I was looking for. Thanks

 

Yeah thats the way I did it. Im gonna do the front this afternoon. The rear started running out after about 3 gallons.

 

75w-90. purchased from the KW dealer.

 

I missed the first part of your question after re-reading.....

As far as the brand.....I haven't a clue what it was. Ill look at it today as I didnt get around to doing the front gear as I was parts hunting around town.....