Quote:
Originally Posted by Marcocopuffs
All,
I noticed that oil was leaking from the rear diff (visible oil around the drain plugs) I took it to the dealer to see what they could do for me (still under warranty). I got news that the diff plug in the rear diff has a tendency to get loose per the Service Advisor of my local dealer. This is supposedly common with the 4Runner FJ and Taco off-roading crowd. They replaced the gasket and added additional sealant to prevent it happening again. Please check your diffs if you off road even occasionally. Overall Toyota handled this pretty well... The parts and labor were done under warranty.
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normal engine oil service would include checking the drive train fluids. with gear oil just a drop will create that picture you displayed. so if oil was on the plug threads that would explain the look you got on the diff. if it was leaking it would run down from the plug and look wet. also if it was topped off that would also show like that.
using thread sealant on the threads is used on some diff plugs. plugs that use a seal washer would not require sealant as the washer does it.
over torque can cause leaks with the washer plugs.
