Fluid change

IMHO i would think so . Its has to be a minimum GL-4 and some video's mention its a GL-5. But if it needs 1.1 quarts you may be stuck buying another for that .1 quarts and that will cost more that 2 quarts of 75W90. Maybe you can sell it to someone with a 4th gen... Just like other manufactures Toyota has gone to slightly thinner lubes to eek out a 0.01 mpg increase (like 75W85 vs 75w90 in diffs etc)

For your viewing pleasure

https://youtu.be/3le9ZT5HUlk

 

i was sold on it because it does not vary in viscosity (straight weight) during extreme cold (below zero) and needing the electronic mechanisms to engage the transfer properly as needed for blizzard driving conditions. and i did not want the transfer case to get all wonky with a variable viscosity
but i have no clue if That even matters lol
trying to avoid the dealershop 4x4 fluid exchange that is over 500$
those stupid front diff plugs were a nasty to remove with a crack and bummed arm

 

Although not exactly a 75W and a 75W90 are supposed to have the same viscosity at 0F (75W) so cold weather performance is not an issue. And then you can add in the advantages of synthetics.
I am sure you are not running a strict 5W engine oil just because of winter starting but something like a 5W30 or whatever multigrade oil your model specifies.

If you have already shelled out the $$$ for the 75W i wouldnt hesitate to use it but only due to the fact that you actually paid for it, not due to some thought that it will be better when cold.


And given a nice warm days and at most 90 minutes you can do this all yourself and save the $500. And every one would agree the front diff drain plug is a royal pain and many have gone to the lexus version that uses a hex head vs allen key for that reason

 

is that lexus plug Less Tight on there?
i was breaking a factory 13yr installed plug with a 1/2" breaker and very little clearance to the concrete below with the driver wheel off for close access

 

Its not that its less tight. Its that you can use an actual 6 sided hex socket instead of the so easy to strip 10 mm allen key. They both use same torque settings.

 

Thanks, you all confirm what I've been reading/watching and what the manual shows. GL4 for the transmission and transfer. I figure if they say GL4 OR GL5......I'm going to be safe and use GL4 in those applications...GL5 for the differentials.

 

Redline 75w90 in diffs, Redline MT-90 in the trans and transfer. Excellent results in mine.

 

That’s what I did on the taco I bought this year, LSD additive included. It’s really not too expensive when you do it all yourself.