Quote:
Originally Posted by rwatson22
I have a 2002 Dutch Star on a W22 chassis. It is low mileage and I cannot seem to locate a recommended (based in months/years) fluid replacement recommendation in the owner's manual. I know I should replace the transmission fluid every four years (Allison Operator's Manual) but what about the differential fluid?
Thanks in advance for any help.
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Welcome to iRV2.com and the Workhorse forum in particular.
I drove my 2003 W-22 for 98,600 miles and never change the diff. fluid. I have heard WCC Director of Service say: "the ONLY time it needs to be changed is when it becomes contaminated with dirt or water". Otherwise, IMO, don't fix what isn't broke.
OBTW, the NSD also repeatedly said that "occasionally" we should "drive it like you stole it" and I have done that regularly to both a W-22 and a W-24 with absolutely no ill effects other than the lower MPG.