Quote:
Originally Posted by serialk11r
The diff fluid is something I'm just thinking about because an unpowered diff at highway speed is mainly going to be losing energy churning the oil.
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As a rule of thumb; 4WDrives uncouple the wheels from the side shafts when 4WD is not in use.
ie: Both side shafts, the diff and the driveshaft are all standing still until you engage 4WD.