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Lubricants for late model Ram manual transmissions

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  • Lubricants for late model Ram manual transmissions

    A thread on lubricants in the M-series forum causes me to think about the lubricants for the late model 5 & 6-speeds. Dodge specs different lubes for each of them. We have moved past the possibility of just having a 5-gallon bucket of SAE 85W-90 for everything.

    The lubricant question is the subject of never ending debate at turbodieselregister. Broadening the discussion to all manual transmissions, synchro rings can be different, and a critical factor. they are not all brass now; some are other materials as base metal and then faced with some different material. Use of the wrong lube can damage them.

    So, what are you using in the 5 or 6-speed transmission in your 1994 and up Ram Dodge? I admit I don't know what Dodge recommended for the Getrag in the previous years.
    Power Wagon Advertiser monthly magazine, editor & publisher.


    Why is it that the inside of old truck cabs smell so good?

  • #2
    95 Ram with NV4500. Currently using Castrol Syntorq. Have used Amsoil in the past and liked the smooth shifting but worried about synchro damage over time. Amsoil has just come out with two new lubes. MTF for the NV-5600 and MTG for the NV-4500. I will be switching to Amsoil MTG as soon as I can get my hands on some.

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    • #3
      The Getrag transmissions were supposed to use 5W-30 motor oil. I have read where some have converted to gear lube... with out trouble. Best to over fill the Getrag by 1 quart, to preserve and enhance the imput shaft bearing.

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