Differentials and Transfer Case Fluid Change

[Msfitoy]

Just did both recently…would be my second change at 150K…first round was at 75K…this time, both transfer and diff fluid looked fresh like I just put it in…

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[JohnnyO]

Just did both recently…would be my second change at 150K…first round was at 75K…this time, both transfer and diff fluid looked fresh like I just put it in…

Most of the wear occurs early on. The first fluid change will look like tar even at 30k and succeeding changes will drain out cleaner.