GhostriderTx

I changed the transfer oil on my 2001 4Runner with 75w90 dino. While driving after I put it in AWD and I swear I hear a whiring sound that I didn't have before. I am not sure since I rarely use AWD and totally unclear how it icould be related to the transfer case oil change. Any ideas? It has 65 K and case was changed by dealer at 20 and 40 K. The only other thing I tried to do was change the front diff. This failed since the drain plug is apparently welded on. I did some serious pulling on it before quiting

rearviewmirror

Double check the fluid level and the type of fluid you put in there. There's not much that can go wrong with a fluid change if the level and fluid type are correct. I just changed all the drivetrain fluids in my 2000 this past weekend too, I used Mobil1 75W-90 Synthetic gear oil in both diffs and xfer case.