[pure&simple]

Once again, appreciate you taking the time to contact them and share this info. Interesting to note that the revision of the design is a third variable (besides fluid and installation) that could affect NVH characteristics.

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[flash]

yup - the first variant had less preload, but less lockup. the second one had more preload, and better lockup, but some clutch popping. apparently they are working on fixing things. that's good news. the fact that they have to fix something isn't so great, but nothing is perfect right out of the gate. it's encouraging to hear that they aren't just throwing their hands in the air though.



i'll stay on top of this, and let everybody know what comes of it all.

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[94SilverCab]

Hi Pete,

Hmm, I was just talking to Bob Larson about the 968 stuff today. Since that platform shares oil with the diff and gears, it’s a challenge to recommend an oil that is good for both. Most likely, any noise issues are oil related. In our experience, customer feedback has varied depending on the application, brand of oil, weight of the oil, etc.

Our official recommendation is to use a full-synthetic GL-5 with no added friction modifier. For dedicated diff carriers, our own OS-250R is tested to work very well and offer excellent longevity/performance, but it is of course not going to be completely suitable for use in a transaxle application. Other drivers/teams have given us good feedback from using Motul, Eneos, etc. but most of the feedback we have from those guys has been on FF applications (Honda, Mini, Scion, etc.)

Don’t have any 968-specific feedback as that is a bit on the rare side for OS <acronym title='Limited Slip Differential'>LSD</acronym> fitment.

For any clunking etc. coming from the diff in slow-speed situations, the solutions we suggest are:

1. Use a different oil

2. Try a lower preload setting (requires cone springs to be changed)

3. Convert to TCD model (disks precision machined with holes for superior oil flow characteristics)



Bob had also mentioned that the 968 as a rather finicky transaxle and noise may come from something other than the diff. Anyway, hope this helps.



Regards,



Mark Mendoza



Toyota Tsusho America, Inc.

OS Giken USA

1977 W. 190[sup]th[/sup] St. Suite 200

Torrance, CA 90504

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[flash]

essentially what i said.



they obviously know about the problems, and do not specifically recommend it for this application.

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[94SilverCab]

Though they don't discount the possibilityof its use...feel fre to run whatever you decide in YOUR car...I LOVE my OS Giken <acronym title='Limited Slip Differential'>LSD</acronym>.



Jay

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[flash]

lol - no, they didn't, and neither did i.



as long as you know what compromises to expect, and can live with it, then run whatever you want



i imagine there will be a few people going back to their installer now for some warranty work.

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[94SilverCab]

I can live with it, and I'm going to get the last word...just, one time....

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[tamathumper]

<img src="/forum/images/smilies/968/popcorn.gif" class="smilie" alt="" />

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[94SilverCab]

<img src="/forum/images/smilies/968/glare.gif" class="smilie" alt="" />

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