Proper fill level on rear diff, front diff and transfer case?

Front diff, rear diff and transfer case are all easy. The AT fluid requires the jumper method, is more complicated than checking diffs, but is not that bad.

 

Fair statement that you have had an experience yourself that leads to your elevated concern. But…still doesn’t explain why a three hour drive is of concern.

Why not ensure the dealer does a level check as part of your purchase agreement? If you do a full check yourself, what ensures you’ve done it properly? What if you do it improperly and you induce an issue that later leads to a warranty dispute?

I think you’re over complicating this, but understand you had a negative experience that’s informing your thought process.

 

Seems pretty bad to me. Probably one of those things that, once you’ve done it once, it’s not terrible. But I read through the procedure and absolutely do not have warm fuzzy feelings about doing it myself. Uuugh.

 

I’m not overly concerned about the 3 hour drive. If I thought I could improperly check the levels , I wouldn’t do it. But I understand someone could induce a problem if not done properly.

 

I’ve changed my diff and t-case fluids a few times, just make sure the truck is on level ground and add oil until it starts to come out the fill holes. It may not be exactly to Toyota’s specs but IMO, it’s just easier and I haven’t had any seal leaks or probs. Make sure you use the proper fluid though (GL4 vs GL5)

The AT fluid check was more involved so I just followed the instructions I found in this forum. Mine was a little low from the factory but nothing to worry about.