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Front and rear differential service maintenance schedule


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Depending on your driving characteristics and whether you tow. I do mine every 10k Miles, a bit excessive but it’s very easy to have done and cheap. Many do it every 20-30K miles. Your owners manual will be at the max.

 

 

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For those that have had these maintenance items done before, what is the approximate cost for changing diff fluid, transmission fluid, transfer case fluid etc? Im coming up on 45k and want to plan ahead $$ wise. Thanks in advance.

Edited by DustinZ71
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As for the front and rear differentials. 

I change mine out early from the start to AMSOIL Severe Gear 75w-90.  I did this on my 2002 at 1,000 miles on the truck and then again at 72k.  Then again at 162k and the fluid had 90k miles on it and the UOA showed great and to extend it out to 120K.  I tow about once a month a 5k, 10x20 box trailer. 

 

I just changed out the fluid on my 2019.  Not as easy on the front since there isn't a drain plug like on the K2's and the fill plug is a tight fit between it and the electric power steering. I was only able to suck out a little over a qt of fluid.    The back is the same as the K2's.  Reusable gasket and all.

 

Cost is what the fluid would be if you do it yourself which is easy.  Cost for the Severe Gear 75w-90 in the squeeze pack, ( which is awesome and made it so easy to put the fluid back in) is $17.10 retail.  Take about 25% off that if you are a Preferred Customer.  My 2019 took a little over 3qts to do both diff's.   My 2002 takes 2qts for the front and a little over 2qts for the rear.

 

The transfer case is easy as well. It holds about 2qts and at $14.60 a qt for the AMSOIL ATL fluid again knock of about 25% for the Preferred Customer cost.

 

The transmission I had the dealer do mine at first.  16qts of fluid and they charged me $80 for labor.  $14.60 a qt for AMSOIL ATL which works in the 6sp and 8sp transmissions.

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The manual recommends a lighter fluid in the rear, that's odd.  Since Im getting new gears put in on the 27th I'll get fresh fluid installed then and then again after 500 miles of break in get the fluid changed again.  I'll be right at 18k miles when that goes down.  I'll be using Redline gear oil

Edited by Jacoby
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On 3/16/2019 at 7:51 PM, TXGREEK said:

Depending on your driving characteristics and whether you tow. I do mine every 10k Miles, a bit excessive but it’s very easy to have done and cheap. Many do it every 20-30K miles. Your owners manual will be at the max.

 

 

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I do my oil every 10K?  I have never heard of anybody doing Diff's @ 10K.......CRAY..CRAY

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I do my oil every 10K?  I have never heard of anybody doing Diff's @ 10K.......CRAY..CRAY


Wait! You get oil changes every 10k??

Yeah, I know. That’s nothing, my 16 Z71 DMax, it got a rear diff change every time I towed a 5th wheel which was every two months. Must be an OCD thing with me, another reason why friends line up when they hear I’m thinking of selling my trucks.


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