synthetic in LSD

[calitundra]

I just bought the LSD third member on ebay and was going to put synthetic in the rear when replaced. I thought I would email Eaton first to find out if this was OK. Here was there response;

I recently purchased a Toyota Racing Development LSD
which is your carbon lsd. I wanted to use a synthetic oil
but on Tundrasolutions there are people having "chatter"
problems when using oil like mobile 1 synthetic. This is
even after adding the lsd additive. Can you tell me if it is
possible to use a synthetic or which is the best oil to use
with this unit.

Thanks
John


From: "Phillips, Jeff" <JeffreyLPhillips@eaton.com>
Date: Tue May 13, 2003 6:02:46 AM US/Pacific
To: "'july298@pacbell.net'" <july298@pacbell.net>
Subject: RE: Eaton Automotive Web Site Product Design Application Request

John:

You are correct. Synthetic lube causes chatter in the Eaton Posi
differentials. You need to drain the synthetic lube and add mineral based
GL5 rated lube with 4 oz. of LSD additive. This will ensure that the
differential does not chatter and lives up to the high performance expected
from Eaton performance differentials.

Regards,

Jeff Phillips
Eaton Automotive

-----Original Message-----
From: july298@pacbell.net [mailto:july298@pacbell.net]
Sent: Thursday, May 08, 2003 3:35 AM
To: Sales, Torque Controls
Subject: Eaton Automotive Web Site Product Design Application Request

Hope this helps anyone who is having a problem or is thinking of putting in a LSD

[MMitsock]

Does anyone know if the stock LSD from the factory on 4x4 '03 Tundras the same Eaton unit?

[arkie6]

Originally posted by MMitsock
Does anyone know if the stock LSD from the factory on 4x4 '03 Tundras the same Eaton unit?

The factory LSD units are not made by Eaton, but by Hino in Japan.