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Power steering fluid

Posted

Ok so on my 99 cummins there is nothing that says what fluid should be in my p/s pump. Can't find my owners manual. So I looked on here at downloads and they don't give a fluid spec. So next thing was google. Some people are using Lucas or atf +4 or whatever. I have a bottle of plain ol valvoline p/s fluid but is that right? Thanks. 

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    • IBMobile
      IBMobile

      2002 and older: MOPAR  MS 5931 or equivalent 2003 and newer: MOPAR ATF +4 type 9602 or equivalent  

    • 01cummins4ever
      01cummins4ever

      Nothing but straight off the shelf power steering fluid, Stay away from atf or Hyd. oil. 

    • Mopar1973Man
      Mopar1973Man

      I've been using Dextron ATF in my transfer case for years now. No issues to date.

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    PS for me. Just as available ATF and I have 395k on the oe pump. It must like it.

    I don't see a problem with it, it states that it replaces mopar ms 5391, It does not have to be brand specific 

    • Author

    I just found it was weird there saying 5931 bottle is saying 5391. Online specs for the bottle is saying 5931 haha crazy. 

    • Author
    17 hours ago, 01cummins4ever said:

    Yep, probably misprint, I would think 5931 is correct number, 

    I agree just kinda funny to me by the way. Does anyone know the correct fluid for the transfer case. I've been reading +4 or dexron ll. Thanks 

    • Staff

    Transfer case: NV231HD, NV241LD, NV241HD, fluid ATF+4 type 9602,  fill to bottom edge of fill plug,

    drain and fill plugs tightening torque 30-40ft-lb

    Dextron III in my transfer case and Redline PS fluid in the PS pump.  I'm a fan of running synthetic PS fluid because if the heat generated in the hydro-assist system.  Its gets pretty hot during the summer and the fluid capacity is pretty small for all the work that system does.  Just my opinion.....  :thumbup2:

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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.