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How many miles do you go before you change zf6 fluid?

1000 Views 1 Reply 2 Participants Last post by  jbwaldrop88
I forget. I am only driving about 5k miles per year with the truck now. How many miles do you guys normally go before changing? I only tow occasionally. Most of the miles are unloaded and the towing miles are short around town trips.
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30k if towing alot, 50k under normal conditions
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