2008 4R 4x4 rear diff a LSD?

[KB084RUNNER]

Does anyone know if the rear differential on my 2008 4Runner Limited 4WD is a limited slip? I have called 4 dealers and nobody seems to know.

 

[kn38ms]

V6 Posi
V8 Open

 

[KB084RUNNER]

Yeah thats what I thought. The delaer tech says there is a plate on the back of the diff that says "LSB" on the limited slip ones.

I have a v6 so I will need the LS gear oil.

 

[kn38ms]

Mobile1 LS has it it already in the mix.

 

[Thai]

Does anyone know if the rear differential on my 2008 4Runner Limited 4WD is a limited slip? I have called 4 dealers and nobody seems to know.

Dealers = useless information.

Except for 2009 4runner Trail Edition, ALL 4runners (2wd and 4wd models, V6 and V8 models) have OPEN differential front and rear...no mechanical LSD. The CENTER differential is a limited-slip unit (Torsen T-3).

On 2wd models, the rear differential has "auto LSD" which is a 100% pure marketing term for traction control on the rear axle to "simulate" a LSD. This "auto LSD" can be turned ON or OFF.

On 4wd models, both front and rear differential are controlled by 4-wheel traction control system. So, i guess that you can say that 4wd models have "auto LSD" on the front and rear axles. 4-wheel traction control canNOT be turned off...unless you do a "do-it-yourself" modification to it.

All models have stability control.

The 2009 4runner Trail Edition has a rear axle locker in addition to the traction control system described above.

Hope this helps.

 

[KB084RUNNER]

Thanks, I am thinking about changing the factory gear oil out for synthetic and see a lot of guys using the Mobil1 75w90 versus the 80w90 called for by Toyota in the manual. Any ill effects using the 75w90? I get a slight rear diff hum at 60mph and was wanted to see if the synthetic oil would quiet it down.

 

[KB084RUNNER]

Recently you contacted Toyota. Below is a summary of your contact message and our response.

Thank you for allowing us to be of service to you.




Subject
4 Runner 4x4 rear differential question

Discussion Thread
Response (AMou) 03/19/2009 10:40 AM
Dear XXXXXXX:

We are sorry for any confusion regarding the equipment on your 2008 4Runner and for the delayed response to your inquiry.

The 2008 4Runner does not come with rear limited slip.

We apologize for any inconvenience.

If you have any questions, please feel free to contact us via email by using the following link, http://www.toyota.com/help/contactus.html, or by calling 800-331-4331. We are available from 5 AM to 6 PM, Pacific Time, Monday through Friday and from 7 AM to 4 PM on Saturday.
Sincerely,
Anita Mouton
Toyota Customer Experience
Customer (XXXXXXX) 03/16/2009 09:49 AM
Is the rear differential on my 2008 4Runner a limited slip? I have the torsen center locking limited slip differential but was wondering if the rear differential was limited slip as well?

 

[Vizwar]

A couple times this last winter I got a wicked hum while in 4LO and while in 4HI now I get the traditional 4x4 wiggle sensation when in a tight-ish turn at slow to almost stop speeds (backing out of a space etc). Fixable or normal?