Derick
Full Access Member
Need to do the front and rear diff fluid changes. I've got the gt4 lsd positrack rear end so I'll need additive too. Was thinking Ole mobil1 synth as per ususal. Also what are the capacities of each?
What diff fluids do ya'll like?
- Thread starter Derick
- Start date
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swathdiver
Full Access Member
2500 right? Same fluid for the front and rear differential, 75W90 and if you use 89021677 or Mobil One's with "LS" on the bottle, there's no need for the posi additive as they already contain it.
1.83 Quarts for the front and 2.75 Quarts for the rear.
If I'm wrong and you have a 1500, it's 1.51 qts for the front and 2.15 qts for the rear. The front lube is different, it is 80w90 - 89021672.
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Derick
Full Access Member
Ever do a heavier fluid like the 75w-140 in the rear since it's used 24x7?
swathdiver
Full Access Member
No, just changed it more often when racing or when I used to run a car hauler 24/7.
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Derick
Full Access Member
Out of curiosity does the 1500 rear diff have a plug? I was ecstatic when I saw a plug, I thought I was going to have to pull the diff cover.
Wolfbraid
Full Access Member
My 07 Yukon doesn't have a plug... I want to do this, but still need to figure out what I have so I get the right fluids
