I have a 05 CTD 4X4 G56 dually.

I need to know how much oil the FRONT, REAR, diffs.
TRANSFER CASE, and G56 TRANS, holds.

I am going to Amsoil.

Thanks in advance

 

I am preparing for the same.
They tell me to get 7 quarts and that will cove the front and back diff no matter which rear end you have. The transfer case 2-3 quarts is what the dealer suggested.

 

rear diff-122oz
front-76 oz

thats from what i have found on here...fixing to do mine myself.....

 

The guy I get my Amsoil from gave me a printout of every fluid that thing holds, type and quantity. Just ask the dealer you are getting your oil from and I bet they can do the same for you.

 

transfer case = 2 quarts = ATF+4
front diff = 3 quarts = synthetic 75-90
rear diff = 4 quarts = synthetic 75-90
g56 = 6 quarts = ATF+4

If you have an early build g56 and can not get 6 quarts in you have to take the shifter boot off to fill the rest. Some of the early build G56 transmissions had the fill hole in the wrong location.

 

My T-case and G56 took 11 Qts. I know I didn't spill that much on the ground!