Does my GX460 have limited slip differentials?

[Gebo]

Do I have limited slip diffs in my '23 GX460?

 

[edyvw]

Do I have limited slip diffs in my '23 GX460?

I don’t think so. I think brakes do that job.

 

[We're Metals]

Does Toyota even have a limited slip? I thought they were either KDSS or E Lockers.

 

[cptbarkey]

From a Lexus Press Release found on google
Full 4-Wheel Drive Capability
The Lexus GX 460’s on-road smoothness and quiet ride belie its considerable trail-driving capability. It starts with true, full-time 4-wheel drive, which uses an electronically controlled transfer case and a TORSEN® torque-sensing limited slip center differential. The TORSEN differential distributes power 40:60 under most driving conditions and changes the ratio as needed based on wheel slip. The system offers a low range for off-road driving, and the center differential can be electronically locked.

The GX 460 brings its considerable 4WD capability to on-road driving, as well. As you drive through a curve, for example, the system can change the torque split to 30:70 to enhance vehicle tracking. If wheels spin, the center differential can change the ratio to 50:50 to help control the slippage. The system can respond to sudden changes in road-surface conditions, such as driving through a puddle or over an ice patch.

The off-road capability starts with a low range, and it is supported by a wide array of chassis control technology. With Downhill Assist Control (DAC), Hill-start Assist Control (HAC), Active Traction Control (A-TRAC), Vehicle Stability Control (VSC) and available Crawl Control, the GX 460 shrugs off unpaved, uneven trails and steep inclines. In some off-road conditions, the driver might have a hard time knowing which direction the front wheels are pointing, so the GX 460 comes with a standard steering angle indicator in the gauge panel.

Active Traction Control (A-TRAC) provides the traction benefits of having locking front and rear differentials, but with lower weight. The system can apply the brake to a slipping wheel, while transferring torque to the wheels with better traction.

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Its wonderful, in short. I've had nothing but confidence in several situations.

 

[nthach]

You have a Torsen diff in the transfer case(hence why Toyota wants their exotic Transfer Fluid LF 75W) but the front and rear diffs are open.

You can install LSDs into the front and rear. It’s standard Toyota fare for the diffs.

 

[edyvw]

You have a Torsen diff in the transfer case(hence why Toyota wants their exotic Transfer Fluid LF 75W) but the front and rear diffs are open.

You can install LSDs into the front and rear. It’s standard Toyota fare for the diffs.

I have Torsen in Sequoia, but uses 75W90.

 

[02SE]

I have Torsen in Sequoia, but uses 75W90.

Yeah, Toyota has used a Torsen diff in some of their Full Time 4wd transfer cases for years. 75w90 was the spec for most of those years. The more recent 75w spec is just an attempt to eeeeek out another fraction of a MPG for CAFE.

 

[02SE]

Does Toyota even have a limited slip? I thought they were either KDSS or E Lockers.

KDSS is part of the suspension on some of their 4wd vehicles. Basically hydraulic cylinders which control the front and rear swaybars firm up on the road for better handling, and allow the swaybars to move more readily in slow off road situations for better axle articulation. I have the system on my TRD ORP 4Runner. It was one of the things the 4Runner had to have for me to buy it. It works great IMO.

I also have the selectable rear diff locker, or E-locker as it's often referred to.

Toyota hasn't had a limited slip differential in an axle of a 4wd, available in the USA in a long time. For that they use traction control or A-Trac as they refer to it. It actually works pretty well, but it's not a substitute for a locking differential.

 

[edyvw]

Yeah, Toyota has used a Torsen diff in some of their Full Time 4wd transfer cases for years. 75w90 was the spec for most of those years. The more recent 75w spec is just an attempt to eeeeek out another fraction of a MPG for CAFE.

Interestingly, I think @Astro14 Tundra, which is, as far as I remember, 2016, is using 75W, while my 2018 Sequoia is using 75W90.
My 2015 Sienna also had 75W (I used 75W90).

 

[Sequoiasoon]

My Sequoia never got stuck where I needed help but did need 4WD with locked center diff a couple times.

My one "fond" memory as a test. My Sequoia in RWD only with Altimax Arctic on a snowy hill trying to start. Lots of clicking/buzzing/beeping, sliding sideways and backwards. Throttle getting killed etc. I put it in 4WD, not sure if I locked diff and made it up the hill. 5 minutes later in Dads Chevy conversion van, RWD only, also on Altimax Arctic. Stopped in same spot on hill, stepped on gas, rear end slid out slightly, motor stayed revved up, wheels spun clearing snow and drove up no issues. 2 solid cleared strips all the way up like a nice burnout from the GM limited slip differential.

Brake based versions are ok IF you are able to also keep throttle up if needed to clear snow/mud.

Back when I had it I really wanted to get the Eaton LSD which was relabeled as the TRD version. Dealer would install and have full Toyota warranty but I didn't have the cash.

 

[02SE]

Interestingly, I think @Astro14 Tundra, which is, as far as I remember, 2016, is using 75W, while my 2018 Sequoia is using 75W90.
My 2015 Sienna also had 75W (I used 75W90).

Yeah, Toyota has some inconsistency with viscosity specs. Toyota is generally specing lower viscosity lubricants across the board for fractionally better MPG numbers to help them with CAFE.

My 5th gen TRD ORP 4Runner has the Aisin VF2A transfer case. The same Aisin VF2A my 3rd gen 4Runner had. Nothing has changed internally. In the 3rd gen the spec was 75w90. In my 5th gen, the spec is 75w. Toyota also specs 75w85 in the front diff and rear axle. I'm using Redline 75w90 in all three.

The engine is speced for 0w20 in the USA. The same engine is speced for up to 20w50 in some countries.

 

[Astro14]

Interestingly, I think @Astro14 Tundra, which is, as far as I remember, 2016, is using 75W, while my 2018 Sequoia is using 75W90.
My 2015 Sienna also had 75W (I used 75W90).

My Tundra specifies the 75W for the transfer case - and at $18/quart, the HPL 75W is a screaming bargain compared with the $80/quart (not a typo, an actual quote) Toyota fluid.

I am not aware of anything special in that transfer case - it is simply a conventional locking hi/lo type. No limited slip - it’s locked, or not.

The front differential specs a 75W85, and I have HPL 75W85 in it. Yes, they make it. The rear specs 75W90, and I have the HPL 75W90.

It’s not good on gas, no surprise there, and I don’t see any change in MPG, positive or negative, using HPL 0W30 in the engine or HPL in the differentials, or using HPL Green in the transmission. But I am happy with the truck and with HPL.

 

[edyvw]

My Tundra specifies the 75W for the transfer case - and at $18/quart, the HPL 75W is a screaming bargain compared with the $80/quart (not a typo, an actual quote) Toyota fluid.

I am not aware of anything special in that transfer case - it is simply a conventional locking hi/lo type. No limited slip - it’s locked, or not.

The front differential specs a 75W85, and I have HPL 75W85 in it. Yes, they make it. The rear specs 75W90, and I have the HPL 75W90.

It’s not good on gas, no surprise there, and I don’t see any change in MPG, positive or negative, using HPL 0W30 in the engine or HPL in the differentials, or using HPL Green in the transmission. But I am happy with the truck and with HPL.

That is a confusing part. I think both TC in your Tundra and my Sequoia are the same. However, my manual specifies 75W90 although it is a couple of years younger vehicle. One would think they would specify 75W in newer vehicles. Also, my 2015 Sienna had 75W. And no, I did not pay Toyota for their 75W. It is a theft.
Both my differentials are like yours. Front 75W85, rear 75W90. And same, no, it does not matter that I use the Euro oil in an engine, 75W90 across the driveline, it is a pig.

 

[edyvw]

Yeah, Toyota has some inconsistency with viscosity specs. Toyota is generally specing lower viscosity lubricants across the board for fractionally better MPG numbers to help them with CAFE.

My 5th gen TRD ORP 4Runner has the Aisin VF2A transfer case. The same Aisin VF2A my 3rd gen 4Runner had. Nothing has changed internally. In the 3rd gen the spec was 75w90. In my 5th gen, the spec is 75w. Toyota also specs 75w85 in the front diff and rear axle. I'm using Redline 75w90 in all three.

The engine is speced for 0w20 in the USA. The same engine is speced for up to 20w50 in some countries.

That is Australia and Africa.
In Europe, all their 2GR-FE and FKS were specified for a long time for ACEA C3 (maybe until a couple of years ago).
I use in my 3UR Euro. Last change was Edge 0W30, not it is Motul X-Clean 5W30.

 

[02SE]

That is Australia and Africa.

Also a handful of middle eastern countries.

 

[edyvw]

Also a handful of middle eastern countries.

True.