Differential and Tcase oil

Hello. Is it ok to use

$39 75w-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75w-90 for differential and transfer case on a 2017 tundra? I am looking at Mobil 1, but there’s also a Mobil Delvac 1. Does anyone know what’s the difference is? Or what brand do you recommend? Thank you so much in advance for your help.

 

For front and rear diff most gear oils are fine. I like Valvoline in the Flex fill bags. Makes adding the gear oil super easy.

I would do some research on the T-Case. I know that 4runners and Tacomas after a certain year require a different fluid than your normal GL5 diff fluid found these days.

 

Thank you. I’ve been reading and see that many people mentioned Lucas 85w-140 to better protection. Should I go that route or stick with

$39 75w-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75w-90? The truck is at 160k miles.

 

I personally went with Amsoil Severe Gear 75-140w oil in the diffs (the collapsable bags), and Ravenol 75W in the T-case. Jury is still out on the Ravenol, but I've seen mostly positive things posted. I can always change it out, but the factory stuff is like $75-85 a quart (if you can find it) and requires 2 quarts. If the Ravenol doesn't work out so well, I'll go OEM on that one. Will check in a few more months to see fluid condition. The fluid that came out looked super clean (did all of this at 45K miles) but I'd also read many others when draining and refilling it was clean coming out if changed at a decent interval. I tend to spend more on maintenance, and shorter intervals for the longevity of the truck.

 

Ravenol 75w is what I am going to use in Tcase if I ever get to it. I changed it at 50k in Tacoma and could not tell used oil from new. Tcase oil is last thing on my list. After what I have read on this forum I would not use anything in tcase other then 75w with proper specs.

 

+1 for Ravenol 75w. The bottle with the long straw makes the fill up extremely easy as well.

Edit: in the T-Case that is, not the differentials.

 

OCI thread related.

F/R Differential: 30k (OE or aftermarket). --

$39 75w-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75w-90 Amsoil Severe Gear
Transfer Case: 30k (OE or aftermarket) -- 75w Ravenoil

OCI non-thread related.

Oil & Filter: 5k miles or 6mo. -- Pennzoil Ultra Platinum 5w-30
Transmission Fluid (drain/fill): 30k or 6yrs. -- OE Toyota Brand.
Coolant: 50k miles or 5yrs. -- OE Toyota Brand.
Power Steering Fluid (OE or aftermarket Fluid) -- OE Toyota Brand.
Brake Fluid DOT 3, inspect at 3 years (aftermarket)
Sparks Plugs: 120k (OE)

 

Amsoil

 

Liquimoly 5100 75w Or Ravenol 75w or Redline 75w for the transfer case.

For the differentials, any 75w-85 or

$39 75w-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75w-90 will do.

You'll have a bunch of weird fanboys on this forum for ravenol. As long as it meets spec, you're good to go.

 

I checked with my dealer and they use 75-90 in differentials and transfer case. They said they only use 75 when warranty is involved. I used 75-90 synthetic in all and no problems goin and out of 4 wheel drive.

 

Yeah and they use it out of a huge drum, which is assumed to be lower quality. Most shops use the same oil for all 3. Doesn't mean it's correct. The T case takes a different fluid per Toyota. And Toyota sells a specific T case fluid that is super expensive.

 

https://youtu.be/3le9ZT5HUlk

 

from Toyota to one of the members,

 

The big distinction here is GL4 oil for the T-case and GL5 for the differentials.

GL5 (hypoid gear oil) has higher levels of sulfur that can damage/corrode T-case synchronizers.

Different oils for different applications.

 

⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆

 

Kind of like saying “I do the right thing when someone is holding me accountable.”

 

I switched to

$39 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75W-90, for the differentials, but only because I couldn't find 75W-85 at the time. Used the easy Valvoline bags. Gas mileage has dropped a bit. I think I'll switch to Redline or Amsoil Severe Duty 75W-85 next go around.

 

Both differentials in my 14 (if I can get the fill plug out of the front) will be getting Amsoil 75 w-140 severe gear.

Seems to work in all my other rides, no problem

 

Ravenol MTF-3 for transfer case: https://www.ravenolamerica.com/passenger-car-products/75w-gear-oil-ravenol-mtf-3/ It says GL-4 and recommended for "TOYOTA 08885-81001, TOYOTA 08885-81081, (Equivalent to the 08885-81080 U.S. part number);"

 

Thank you. I was wondering where I was gonna get that T Case stuff.

 

I use this in my t case, it shifts in 4WD way faster than any other fluid I’ve tried. A lot of the 4Runner/taco guys run it in their cases.

 

Redline MT-LV is a solid option too for the tcase. Have it in both my Tundra and the wife's Sequoia.

 

Contacted Amsoil regarding the TCase oil in our rides.

First response was "we don't have anything"
Second response after sending them a copy of the email in this thread coming from Toyota saying you can use the 75w90 gear oil as a substitute, and they got a bit irritated, and repeated that they didn't have anything.

So, don't contact Amsoil, unless you want a snarky email reply.

lol

 

Contact the cordial and nice people at boutique Red Line.

 

You contacted sales associates/ customer service reps. Not engineers, their system says there is no substitute, that’s what they are telling you. They aren’t going to recommend an oil they haven’t deemed as an acceptable replacement. If you are looking for an Amsoil fluid that works well in our transfer cases by Amsoil, I’ve been using their syncromesh fluid, it’s been working great and a lot of the tacoma/4runner guys have been using it also. I’m not sure why Amsoil hasn’t added it to their substitutions list.

 

I'm giving the MT-LV a go in my '21. 15% off at Oreilly's if you select ship to home.

 

I just changed mine the other day. I used Amsoil 75W85 in the front and rear diffs. I used Redline MT-LV in the transfer case. The MT-LV specifically says it can be used in place of the Toyota 75W transfer case oil on the bottle.

 

I agree, on all points.

No reason to be nasty to potential customers, as well