Is there a better transfer case oil than OEM?

Many have contacted Redline directly; no equivalent because Toyota won't release the spec.
Up to you...

 

Did my t case oil with the ravenol stuff 20k miles ago. Used Lucas in the diffs, and motorcraft

$34 xt-m5-qs full synthetic manual transmission fluid - 1 quart, black

xt-m5-qs in the transmission

 

Did the motorcraft fluid improve the shifting feel of the transmission? I have read that that fluid is amazing and considering putting that in my trans. Does it meet Toyota's requirements for fluid in our manual transmission? Thanks!

 

Pretty sure the motorcraft stuff meets Toyota’s req. I’m sure I’d have checked on that but I don’t remember. It improved it slightly, maybe. Maybe placebo.

If you want to make it shift smooth, do the accumulator delete.

 

Well, I went and spoke to parts guy and ordered a can of the LF 75w. I ask if I could return it and explained what I was going to do. He said yes while laughing, couldn’t believe I actually wanted to order it to begin with. He turned and pointed to mobile 1 75w90 and said: that’s what you need. What I’m going to do is try the Red Line 70/75 first and if I notice any engagement issues or strange noises I’m going to drain and fill with the Toyota fluid. Oh and had a Toyota tech tell me that the Toyota fluid was a gl-5, for which he couldn’t produce any documentation to validate his statement.

 

Lots of parts guys are morons. I just did my transfer case and my wife's center diff with the Toyota 75w. The parts guy I spoke with had no clue what the fluid is or that that's what the book called for. That being said, if my wife's center diff didn't call for the Toyota 75w I would have done mine witj the ravenol, but I already had to buy two cans for her vehicle, so why not get a 3rd. I did use the ravenol 75w85 for our front and rear diffs.

 

I can play the viscosity and cross reference game and get Toyota ATF WS as a possible substitute for the transfer gear oil.

 

I know nothing about the inner workings of our transfer case. Tell me about it. Link me to it. Is is just gears? What type? Viscosity is one thing. But AW, FM, EP, etc additives are another. I have read (which means nothing) about a number of people filling with various (albeit good Amsoil, Redline M1, etc)

$28 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75W-90 gear oil and going on their merry way.

 

I'm not sure what your after, exactly.

For viscosity, I prefer to compare cSt.
Based on that, 75W90 is three times thicker at 100°C. I'd be concerned about pump ability and heat transfer.

You can Google "Toyota LF VOA" for most of the additive package.

As far as getting from Toyota LF to Toyota ATF WS;

Toyota LF>viscosity>Redline MT-LV 70/75

Redline MT-LV 70/75>viscosity>Redline D6 ATF

Redland D6>cross reference>Toyota ATF WS

 

So, general consensus seems to be to use the Toyota fluid. I have some coming, so that’s not a problem. My big issue is the outrageous price that manufacturers (not just Toyota) charge for their dealer/OEM only parts and service. I like doing my own service and using my preference of fluids.

 

I'm after a suitable replacement fluid. And there is more to exchanging fluids than viscosity. ATF has very different additives (AW, certainly FM, and no EP additives in ATF for example) than gear oil, for example. Knowing exactly how the T.C. works and how it is made tells me a lot about what fluid it needs.

 

Use the expensive stuff they will last hundreds of thousands of miles use the stock stuff they will last hundreds of thousands of miles.

 

I put NEO gear oil in my RX7. It replaced 24 year old 50k mile oil, in a manual gear box. While shifting improved, it is not like slicing through butter. I replaced the gearbox oil in my MR2T with 126k miles and shifting improved dramatically. Both of these cars were manufactured in the early 1990's when machining and oil was not as refined and advanced as they are today. Back then, if you told me cars would be on a 10,000 mile oil change interval I would call you crazy.

I would just put in whatever you think is necessary (i.e. make you feel warm and fuzzy). The OEM oil is likely more than adequate for whatever you do, but I understand the perceived need to change it with the parroting opinions on this board. Just remember there are 20,000 Tacomas sold every month and 19,975 of them will get to 150k+ on the original gear oil

 

https://www.toyotapartsdeal.com/oem/toyota~transfer~gear~oil~lf~08885-81080.html

 

That was kind of the point of my post(s); viscosity isn't everything.

Toyota specific info is hard to come by. I believe Isuzu and Ford have similar, if not the same, transfer case in their mid-size trucks.
The only possible differences I can find are the electromagnetic clutch that matches front and rear shaft speeds and a HY-VO chain.

 

According to Toyota there’s 2 part numbers for transfer cases in a 2016 Tacoma,
36110-04010 and 36110-05030, by VIN search the 36110-0430 is what is in my truck.
According to Borg Warner, they have not produced or supplied Toyota with a transfer case that corresponds with either of those part numbers and they also said they have only supplied cases for the Tundra.

 

I have looked all over the Transfer case in my truck and cannot find any id plate or tag that would indicate the model or manufacturer. I guess it’s as big a mystery as the oil

 

There's a tag above the actuator with Toyota's part number and bar codes.
I believe the service manual calls it a VC2FM.

 

One of the places you can sometimes gather at least a bit of information about these fluids is the SDS. It didn’t list much of interest for the LF fluid:



However for the LV fluid, it lists it as Mobil HYDRAUL 56 with the following:



So I guess take from that what you’d like.

Jeff

 

https://www.bobistheoilguy.com/foru...t-toyota-transfer-gear-oil-lf-75w#Post5118386