Home Technical Discussions Volkswagen Jetta, Golf, GTI: 1993-1999, Cabrio 1995-2002 (A3)

Volkswagen Jetta, Golf, GTI: 1993-1999, Cabrio 1995-2002 (A3) Final Drive Fluid


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Last Post: Aug 16, 2004 3:15 PM Last Post By: Art
baomo

Posts: 6
Registered: 08/11/04
Final Drive Fluid
Posted: Aug 11, 2004 6:43 PM
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What is the correct fluid for the 01M auto trans final drive? (97 Golf GL) According to the Bentley manual it's synthetic 75W90, in the VW bulletin it says ATF. Can they be interchanged? I'm confused.

http://www.20vturbo.com/tsb/mirror/pdf/37-95-02.pdf

[img]http://www.freeupload.net/users/uploads/asdf.jpg[/img]
Port Fellamay

Posts: 4,105
Registered: 01/18/04
Re: Final Drive Fluid
Posted: Aug 11, 2004 7:19 PM   in response to: baomo in response to: baomo
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ATF is probably just a generic term they are slacking on it. Specifically it is probably the Bentley 75W90 which is interchangeable with the term ATF in the general sense. Because that's what it is, a very special namebrand formula you shouldn't replace with any old ATF mind you, but that's the scoop just jargon.
tantalus

Posts: 922
Registered: 06/02/04
Re: Final Drive Fluid
Posted: Aug 11, 2004 9:02 PM   in response to: baomo in response to: baomo
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Most older VW automatic transmissions use ATF in the "transmission" part of the transmission but use normal gear oil in the "final drive" part of the transmission. These are simply two different compartments in the same transmission.

Your newer transmission, per the TB you attached, is supposed to use ATF in both sections.

And also per the TB you MUST use only the very special, and equally expensive, synthetic VW ATF.

No, the two are not interchangable.
baomo

Posts: 6
Registered: 08/11/04
Re: Final Drive Fluid
Posted: Aug 11, 2004 9:10 PM   in response to: Port Fellamay in response to: Port Fellamay
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Yea but they show diffrent part numbers for the ATF and gear oil. So it should be one or the other. What was the factory fill?
baomo

Posts: 6
Registered: 08/11/04
Re: Final Drive Fluid
Posted: Aug 11, 2004 9:12 PM   in response to: tantalus in response to: tantalus
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So its ATF and not gear oil. The bentley manual says 75W90 gear oil is this a misprint?
Port Fellamay

Posts: 4,105
Registered: 01/18/04
Re: Final Drive Fluid
Posted: Aug 11, 2004 9:14 PM   in response to: baomo in response to: baomo
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Sorry I didn't look at those links you left..I am kind of busy with other things. Yeah it looks like the 01M and 01P use VW special ATF fluid in the tranny and final drive. Then with the older volkswagens you use a still special lube you shouldn't change with maintenance, but I guess they are saying it's 75W90 in the final drive, Dexron III in the tranny.
baomo

Posts: 6
Registered: 08/11/04
Re: Final Drive Fluid
Posted: Aug 13, 2004 9:19 AM   in response to: baomo in response to: baomo
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Well i'm gonna change it this weekend. I guess i'll have both ATF and gear oil on hand, see if i can determine what the factory fill is by its thickness.
TomB

Posts: 1,384
Registered: 08/06/02
Re: Final Drive Fluid
Posted: Aug 13, 2004 10:06 AM   in response to: baomo in response to: baomo
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Every spec I've checked for the newer transmissions still shows a separate fill of synthetic GEAR OIL in the final drive, not ATF. True for Golf/Jetta, Passat, Eurovan, Touareg... May be confusing because the automatic tranny section uses synthetic ATF - so they are both synthetics, but very different animals.

For the tranny ATF use VW part # G 052 162 A2
For the A3 final drive use VW part # G 052 145 A2 (1 Liter)

Both also listed in 1/2 L bottles with an A1 suffix instead of A2
baomo

Posts: 6
Registered: 08/11/04
Re: Final Drive Fluid
Posted: Aug 13, 2004 4:40 PM   in response to: TomB in response to: TomB
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Yea, everywhere i've looked too states 75W90 gear oil exept that VW bulletin.
Has anyone here changed it before?
TomB

Posts: 1,384
Registered: 08/06/02
Re: Final Drive Fluid
Posted: Aug 13, 2004 5:06 PM   in response to: baomo in response to: baomo
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OK, I found a bit more history. First, note that the main focus of that bulletin was the transmission, and the final drive was just a comment.
A later bulletin - 39 98 01 - on final drive notes that ATF was used in production fill of the final drive from December 94 thru August 96; then it was changed to a synthetic 75W90 gear oil.
This bulletin notes seepage of the ATF from the vent on these trannys, and the solution is to drain the ATF and change to a synthetic gear oil...
All the later tech docs specify the gear oil as a fill, so I'd guess no one at VW noticed that old (95) bulletin on the tranny also mentioned ATF in the final drive.
I'd use the VW synthetic gear oil in the final drive; but I've also had excellent results with both Amsoil and Red Line.
baomo

Posts: 6
Registered: 08/11/04
Re: Final Drive Fluid
Posted: Aug 13, 2004 7:08 PM   in response to: TomB in response to: TomB
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Thanks.
My car is 97 so i don't have to worry about taking the cover off and flushing it out.
I picked up a L of Redline 75W90 today. I'm going to change it tommorw.
Art

Posts: 2,741
Registered: 09/08/00
Re: Final Drive Fluid
Posted: Aug 16, 2004 3:15 PM   in response to: baomo in response to: baomo
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Good Afternoon,

I don't remember what type of fluid was installed originally, but Volkswagen Technical Bulletin 00-97-08 (Fluid Capacity Chart) says that all 01M automatic transmissions from 1993 through 1997 should get 0.75 liters of G052 145 A2. Also, it is a factory fill and there is no maintenance interval for replacement.

I've attached two pictures of this synthetic final drive gear oil (in the container of course).

Arthur LeBrun
Bentley Publishers

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