which rear differential fluid should I use:

I'm going to be changing my truck's differential fluid I have a 2017 Tacoma Sport 2wd, in the manual it says "Toyota Genuine Differential Gear Oil LT 75W-85 GL-5 or equivalent." What brand do you guys put? Anyone know what the LT stands for here? I have seared around and mostly all I found is

$29 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90, is that ok to put in the rear differential? I was thinking of putting Valvoline SynPower 75W-90 Full Synthetic Gear Oil but it says its good for limited slip differentials idk what that means?

 

Any brand gear oil 75-90 will work well. Lt stands for light truck. I used AMSOIL 75w 85W.

 

Thanks!

 

The “for limited slip” means it can be used in those too, limited slip diffs require a friction modifier, which has already been added. No harm with having it in your non limited slip diff

 

I used the oem oil from the metal cans last time. Seems like quality stuff, but difficult to source and pricey. I'll be switching to Amsoil 75w-85 next time.

 

I've been using Amsoil in all my rig's differentials for decades. Works a treat.
https://www.amsoil.com/p/amsoil-75w-90-long-life-100-synthetic-gear-lube-fgr/

Cheers

 

That's fine.

No need for the expense of a boutique lube

 

This is what I just recently used. Under $100 in fluid and it covered my front and rear differential.

 

this is what i use.

 

Just to complicate the matter more: IIRC many of the gear change places recommend 90-140 with a gear change. They, unlike Toyota do not care about economy of fuel use.