Zf 6spd Tranny Oil ???
Race Director
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From: Indianapolis IN
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Racer
Joined: Apr 2003
Posts: 286
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From: Suffolk VA
Originally Posted by 6spd
What Was The Oil Weight That You Guys With The Zf Tranny?? I Think It Was Made By Bmw??
Mike also said that you should change your oil in the tranny more like every 20-30K miles unlike the GM recommended 50K....
Team Owner
Joined: May 2001
Posts: 25,044
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From: Virginia
St. Jude Donor '11
[QUOTE=Brian Blum]I would only use the GM stuff you get at a dealer,
The GM stuff is good enough for me...don't forget to add the small bottle of positraction additive when changing differential fluid(hehe 
) 
The GM stuff is good enough for me...don't forget to add the small bottle of positraction additive when changing differential fluid(hehe )
Last edited by Yello95; Dec 2, 2004 at 06:29 PM.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
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From: NW Chicago Suburbs
[QUOTE=Yello95]
Ouch, I hope you're kidding, this is the ZF6 thread, not the Dana 36/44 thread.
Originally Posted by Brian Blum
...don't forget to add the small bottle of positraction additive
Melting Slicks
Joined: Aug 2000
Posts: 2,925
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From: Dover NH
Originally Posted by silver & red CE
Ouch, I hope you're kidding, this is the ZF6 thread, not the Dana 36/44 thread.
I heard this before about adding posi fluid to the trans (but have never done it..) has anyone else heard that?
Melting Slicks
Joined: Aug 2000
Posts: 2,925
Likes: 3
From: Dover NH
Originally Posted by KyRP2NITe Corvette
Mike also said that you should change your oil in the tranny more like every 20-30K miles unlike the GM recommended 50K....
I think my manual mentions not to change it
just to add to it if it get low!! 
Im going to use the BMW oil when I change mine...
Drifting
Joined: Aug 2004
Posts: 1,400
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From: Oceansaide CA
[QUOTE=Yello95]
And the motor too - helps the rings seal. Add it to radiator, and wham, million mile waterpump. That posi additive is a real panacea! 
Originally Posted by Brian Blum
I would only use the GM stuff you get at a dealer,
The GM stuff is good enough for me...don't forget to add the small bottle of positraction additive
The GM stuff is good enough for me...don't forget to add the small bottle of positraction additive
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Originally Posted by ClarenceT
...That posi additive is a real panacea!
Race Director
Joined: Aug 2003
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From: San Jose Pat Tillman - American Hero
Originally Posted by James94LT1
I just changed mine an put in Redline MTL. It is actually noticably smoother shifting. Probably cause mine was never changed in 76k
Melting Slicks
Joined: Apr 2003
Posts: 2,150
Likes: 6
From: NS
Originally Posted by 6spd
What Was The Oil Weight That You Guys With The Zf Tranny?? I Think It Was Made By Bmw??
I'll post this info one more time, maybe one of the administrators can make a sticky for us.... 
If you check ZF web page you will find:
"Q: What type of oil do I need to use in my ZF S6-40 Corvette transmission?
A: ZF only recommends the following lubricant for S6-40 transmissions. The GM oil (available from GM with part number 1052931) and the Castrol Synthetic Formula RS 10W60 (available from BMW with part number 0751009420)."
Go read for yourself....
http://www.zf-group.com/am/pc/pt/ampcpt03.phtml
ALSO...in the spare parts catalog also on the ZF site...
"All units must use ZF recommended GM Oil (GM Part # 1052931) or Castrol Formula RS 10W60."
http://www.zf-group.com/pdf/S640.pdf
It's a no brainer for me...Castrol goes in mine, replaced every 30,000 miles are recommended by ZF themselves.
Oh, and friction additive in a transmission? I don't think so.
Last edited by Atok; Nov 21, 2004 at 09:07 PM.
