every 30k or 100k on differentials?

Discussion in 'GM Powertrain' started by theflatlander, Feb 19, 2014.

  1. theflatlander

    theflatlander New Member

    Keep in mind I am on the MN/ND border and I use 4 wheel drive quite regularly during the winter. I have been recommended to change my differential fluid every 30k and or 100k. So whats right here? Should I stick with changing it every 30 or let it go to 100,000? Plan on having this truck until it rusts away so I would rather have it done right.
  2. Pikey

    Pikey Moderator Staff Member 5+ Years ROTM Winner 5000 Posts

    I would do it every 30,000. Don't forget to do the t-case also
  3. theflatlander

    theflatlander New Member

    Thanks Pikey. I am having the transfer case and tranny done also but I will be doing those every 50k
  4. Crawdaddy

    Crawdaddy All hail the Mad King!! Staff Member 5+ Years 1000 Posts Platinum Contributor

    Typically differential fluid is one of those forgotten-about fluids that people don't change ever. Personally, I'd probably go closer to a 70-100K oil change interval, but there's nothing that would get hurt by changing it more often.
  5. Jamm3r

    Jamm3r Member 2 Years 100 Posts

    I'm in MN and use the 4wd fairly extensively for winter driving, snow plowing, and mud.

    I run synthetic fluid, which in the cold here, you really should. I use Valvoline but other brands are just as good.

    I check it and if there are no leaks or signs of water contamination I will run it for 3 years before replacing it.
  6. Enkeiavalanche

    Enkeiavalanche Loving the Outdoors Staff Member 5+ Years ROTM Winner 5000 Posts

    I'm at 112K now and have not changed any yet. Just got a Est from the dealer for about $620 for all Rears,Diff and Trans...
  7. RayVoy

    RayVoy Epic Member 5+ Years 5000 Posts

    My dealer checked mine, a couple of years ago, called me and said there was water in the front diff, quoted $240 to change it. I said, you mean $240 to repair the leak and change the fluid? He said no, just change it.

    I took the truck to the guy who normally does my repairs, he said for $260 he would repair and change. I said go ahead. He could not find any leaks, so he just changed it. I asked him to change it twice, that day and two days later. The bill was $80 for 2 changes.

    And you can say, wait, your in Canada; well, in Canada, almost everything cost more than in the US.
  8. JimmyA

    JimmyA Rockstar 4 Years 100 Posts

    If anyone can find a video to change the fluids, please post it! It could become a Sticky, for us newby's to 4x4!
  9. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    On my off-road trucks Ive always sworn by changing the fluid every 30k.
    If your running it in dirt, mud, and through creeks theres always gonna be some water intrusion, I figure lube oils, seals, gaskets, and any filters are always cheaper than repairs.
  10. Cowpie

    Cowpie Rockstar 3 Years 500 Posts

    I always change out the fluids (both diffs, transfer, and transmission) within the first 5,000 miles, put synthetics in, and go about 50,000 miles between changes. Did my 2013 Silverado right about 3500 miles. The rear diff was low from the factory by 1.5 pints. Not good. The transfer case had a lot of metal shavings on the magnetic plug and the fluid looked like sewer water. Whatever they are putting in at the factory, glad I got it out of there early on.

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