Bill Gisse
11-05-2003, 01:24 PM
Anybody know the fluid capacity of the GMC 25000HD Locking Differental. Don't want to buy to much of that stuff when I change it.
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a64pilot 11-05-2003, 01:38 PM 1 Gal. is what it took on My 3500, diff's are the same I'm told cmadmaxman 11-05-2003, 02:36 PM Yep! Just under 4 Qt. use full Synthic gear lube. 75/90 or the heavier stuff if pulling heavy loads. Do a search, lots of good info on here about this. | ||