Anyone Change Rear diff and M/T transmission Oil Yet??

It may not be a bad idea to use factory fluids through the waranty period. This would give T less wiggle room for waranty claims and/or good will support down the road. If you want to be safe, change the fluids more often. I changed my rear diff fluid and engine oil at 2k. I changed my complete transmission assemble at 2200 miles as well. That should cover it for a while.

 

Follow these guidelines:
-GL-4 75w90 for manual transmission
-GL-5 75w90 transfer case and diffs

GL-4 v. GL-5
http://www.widman.biz/uploads/Transaxle_oil.pdf

Toyota's outline of capacities, capacities, and viscosity requirements for the Tacoma
http://www.ttguide.net/maintenance_data_fuel_oil_level_etc_-158.html

 

used Amsoil SG 75w-90 in my front and rear diff. you need a nice long ratchet. I used a half inch drive 24 inch long snap on Ratchet. Make sure you use a 6 point 24mm socket as well. the 12 points will strip it. You can get a Tekton one on Amazon for like 36 bucks with free shipping

TEKTON 15013 1/2" Drive x 24" Extra Long Ratchet with 72-Tooth Oval Head

https://www.amazon.com/TEKTON-15013...qid=1478206280&sr=8-5&keywords=Tekton+ratchet.

Also, i don't remember what the front diff was... But if you check the forums you can find out if it is a 24mm or a 10mm hex.