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When I owned my Ranger, I only used Motorcraft parts/fluids. Is the differential fluid change interval the same as the Ranger? I was just about to get to changing it at the 150k mile mark when the transmission died and I sold it.
Idk the change times on it to be honest. I'd do it like every 30k,but I'm not sure what the actual guide lines on it are.
I have the 4.2 v6 and I'm getting close to hitting 300,000 miles and never had engine troubles truck was originally purchased brand new by my dad it's a 99