Diffs and transfer case fluids

LT or LS?

 

Did you even read the comment this was in reply to?

They said they couldn't find it, I showed them where it was...

 

Oh, yeah, man. I was just following up. Didn't mean any offense or to imply you weren't answering the question. I was just adding to the conversation.

 

No offense taken, just found the follow-up to be a little odd within the context of the question/answer comments.

Correct, a lot of people will not fall into this category.

 

Thank you YotaBro and 14burrito for posting the maintenence link and maintenance log information.

Yes, I am 100 % agree with you. It is case by case depending on how the truck is driven.

 

Anyone know the capacities off the top of their head? Thanks to this thread, decided to do my own and don’t have the truck manuals with me.... *sigh*

 

My recollection is just over 3 qts for the rear and just over 2 qts in front. 6 qts is enough for both. Be warned you'll probably want a transfer pump for the front. The bags or bottles work fine in the back.

 

Thank you! Now to find a transfer pump...

 

Should have one of these at your nearest Walmart.
https://www.walmart.com/ip/Attwood-...RxkC3dG8jpMi0ev6RDyNn2JuO3z4YDNhoC9McQAvD_BwE

 

Or you could go with Amsoil with their awesome bags!
https://www.amsoil.com/p/severe-gear-75w-90-svg/

 

Has anyone used Lucas? They have a synthetic 75w-90 in the area. Having NO luck with Mobile 1 or Ravenol. I guess I can order online, but try to buy local.

 

That's what I based it off when I swapped out my fluids. No experience with Lucas. I used Mobile 1 cause Autozone was running a deal. I honestly don't think that the brands matter too too much but thats just my .02 cents

 

I ordered from a local dealer, like 16 qts(two yota family) and I forgot to note I wanted the squeeze bags!!!!!!!!
I did 4 fluid swaps with a cheapie pump in one day, and just threw it away.

 

I found Mobile 1 LS in 75w-90 at advance auto on sale for $12. Should be ok, just the limited slip version, right? The clerk said it is just fine in an open diff...

 

Do not need a transfer pump if you have a section (2-3 ft?) of tygon tubing. You run one end up into the wheel well and the other down into the fill port on the front diff. Gravity feed. Worked just fine.

 

LT

 

.

 

I just sucked it up and ordered the Toyota LF stuff.

 

For anyone looking for Ravenol, BlauParts has a nice kit and cheaper than Amazon plus free shipping. Going to order this today. https://www.blauparts.com/toyota-tundra-transfer-case-differential-fluid-change-kit.html

 

FYI....I think the kit cost is the same price as ordering the individual containers from their site. I am thinking that if you register on the site, they give you free shipping plus you earn points that are easily convertible into $$ off. Also, they have sales from time to time. Finally, that Ravenol bottle is quite an interesting package. It has a flexible nozzle that pulls out of the top. I saved some empty ones just to have them for other uses.

 

I wonder why they include 7 quarts of gear oil for the diffs...it only takes 6 quarts total. There is 2.2 in the front and 3.8 in the rear.

 

I suppose they don't want you to run short. As I indicated above, I don't think the kit price is discounted vs the individual bottles. I ordered 6 of the MTF-1 and it was plenty.

 

"The Toyota Tundra models were optioned with several rear differential types. These rear end differentials had varying fluid capacities from 3.6 - 4.6 liters (3.8 - 4.8 quarts). Please reference your vehicle owner's manual to confirm your exact rear end differential fluid capacity and adjust the quantity of the 75W-85 gear oil in your cart as needed."

Looks like some require 4.8 in the rear.

 

Does anyone know where the torque specs are documented for the differentials and the transfer case? There are 3 different washer types, so want to make sure they are right and can’t find them in the manual...

 

Specs in the attachments....

 

Awesome, thank you!

To summarize:
Front diff: 29 ft-lbs
Rear diff: 36 ft-lbs
Transfer case: 18 ft-lbs

 

Good to know, last time I did mine I did the good ole "Good N Tight ft lbs"

 

I am new to both Tundras and 4WD in general. I've watched the various YT videos about doing the service yourself. I think I can do most of it, except maybe the transfer case (with the paper clip jumper, shifting sequence and temperature sensor). The used 2016 we bought has 66k miles, and I doubt any of the oils, other than engine oil, was ever serviced. I don't think the truck has ever been used for towing though.

Is 75W-90 safely interchangeable with 75W-85, listed in my manual?

 

You're thinking of the transmission, the transfer case is a simple drain & fill.