Forum Discussion

Ron3rd's avatar
Ron3rd
Explorer III
Apr 22, 2019

2016 CTD 2500 REAR DIFFERENTIAL QUESTION

I was looking at the window sticker from my 2016 CTD and I noticed it said I had the optional "Anti-Spin Differential Rear Axle". Ratio is 3.42. Does that mean I need to run the friction modifier in this one?
  • Ron3rd wrote:
    Cummins12V98 wrote:
    Highly advise dumping the OE fluid and run AMZ/OIL SevereGear 75–90.


    Good info. Do you know the capacity? I've seen conflicting info online


    I just did a 3500 11.5” rear axle and it took a hair under 4 quarts.
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    Cummins12V98 wrote:
    Highly advise dumping the OE fluid and run AMZ/OIL SevereGear 75–90.


    Good info. Do you know the capacity? I've seen conflicting info online
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    ShinerBock wrote:
    No. Ram HD's have a Torsen gear style LSD. Not a clutch style that requires friction modifier like the 1500's.


    OK, got it, thanks.
  • No. Ram HD's have a Torsen gear style LSD. Not a clutch style that requires friction modifier like the 1500's.