Do I need GM additive?

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Jul 7, 2003 | 06:47 PM

93 LT1

Thread Starter

Registered User

Joined: Mar 2002

Posts: 131

From: Darien, IL

Do I need GM additive?

Need to change the diff. fluid on my 3.4L V6. Went to the chevy dealer and the guy looked @ me like I was nuts because I asked for Limted Slip Additive. He said I do not think you need that on a V6? I bought it anyway. So, do the 3.23 Auto 3.4's have a POSI unit requiring this stuff???

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93 LT1

93 3.4L

Jul 7, 2003 | 06:50 PM

MustangEater82

Registered User

Joined: May 2000

Posts: 4,738

From: Charleston, SC

Stock no.... never an option availible for it as far as I know.

Jul 8, 2003 | 12:08 AM

V6Power

Registered User

Joined: Jul 1999

Posts: 154

From: Hanover Park, IL

Only if you have an Auburn or Eaton posi. Something clutch based.

Jul 8, 2003 | 10:46 AM

ImportKILLER

Registered User

Joined: Aug 1999

Posts: 1,151

From: I'm in the Bay, Trick

Technically no, you don't need it. The Zexel-Torsen unit does not need the additive. BUT...

When we changed the fluid in my friends car, it made a weird noise. When we added the additive for kicks, the noise went away. $5...won't hurt to add it in anyways.