6 speed ZF fluid..
Thread Starter
Racer
Joined: Jul 2010
Posts: 414
Likes: 133
From: uncasville ct
6 speed ZF fluid..
I'm sure there has been many threads on this but tried to search and got no results. Whats the best oil to use in the ZF.....I have a 93 LT1 and am replacing the oil in it......
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Not many, hundreds
www.zfdoc.com
a few from the search engine from last few months
http://forums.corvetteforum.com/c4-g...bmw-fluid.html
http://forums.corvetteforum.com/c4-t...f-6-speed.html
http://forums.corvetteforum.com/c4-t...nsmission.html
http://forums.corvetteforum.com/c4-g...il-change.html
http://forums.corvetteforum.com/c4-t...ion-fluid.html
www.zfdoc.com
a few from the search engine from last few months
http://forums.corvetteforum.com/c4-g...bmw-fluid.html
http://forums.corvetteforum.com/c4-t...f-6-speed.html
http://forums.corvetteforum.com/c4-t...nsmission.html
http://forums.corvetteforum.com/c4-g...il-change.html
http://forums.corvetteforum.com/c4-t...ion-fluid.html
Last edited by LD85; May 8, 2012 at 07:11 AM.
Racer
Joined: Jan 2007
Posts: 380
Likes: 1
From: Toronto Ontario
Race Director
Joined: Oct 2005
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From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
The answer is always the same, you will never get everyone to agree on what is "best".
You will get multiple opinions of what everyone else uses.
So, with that said I will tell you I use Amsoil in my '96
Le Mans Master
Joined: Oct 2007
Posts: 9,700
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
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St. Jude Donor '09-'10-'11
Here you go:
AMSOIL Manual Synchromesh Transmission Fluid 5W-30
http://www.amsoil.com/catalog.aspx?G...212?zo=1934716
AMSOIL Manual Synchromesh Transmission Fluid 5W-30
http://www.amsoil.com/catalog.aspx?G...212?zo=1934716
Suckin' gas, haulin' ass.
Joined: Apr 2010
Posts: 1,100
Likes: 8
From: Newport News Virginia
Here you go:
AMSOIL Manual Synchromesh Transmission Fluid 5W-30
http://www.amsoil.com/catalog.aspx?G...212?zo=1934716
AMSOIL Manual Synchromesh Transmission Fluid 5W-30
http://www.amsoil.com/catalog.aspx?G...212?zo=1934716
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
At lot of guys run the Amsoil Syncromesh and it seems to be good.
A few others and me included run the Redline Lightweight Shockproof Gear Oil aka Smurf Blue. It is a little stiff when cold, but butter after a few minutes. No complaints, this stuff will protect your box.
I'm sure you will be happy with either product.
A few others and me included run the Redline Lightweight Shockproof Gear Oil aka Smurf Blue. It is a little stiff when cold, but butter after a few minutes. No complaints, this stuff will protect your box.
I'm sure you will be happy with either product.
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Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
At lot of guys run the Amsoil Syncromesh and it seems to be good.
A few others and me included run the Redline Lightweight Shockproof Gear Oil aka Smurf Blue. It is a little stiff when cold, but butter after a few minutes. No complaints, this stuff will protect your box.
I'm sure you will be happy with either product.
A few others and me included run the Redline Lightweight Shockproof Gear Oil aka Smurf Blue. It is a little stiff when cold, but butter after a few minutes. No complaints, this stuff will protect your box.
I'm sure you will be happy with either product.
I use Smurf blood in mine. Thousands of road course miles over the last 10+ years and no issues [knock on wood] 
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
At lot of guys run the Amsoil Syncromesh and it seems to be good.
A few others and me included run the Redline Lightweight Shockproof Gear Oil aka Smurf Blue. It is a little stiff when cold, but butter after a few minutes. No complaints, this stuff will protect your box.
I'm sure you will be happy with either product.
A few others and me included run the Redline Lightweight Shockproof Gear Oil aka Smurf Blue. It is a little stiff when cold, but butter after a few minutes. No complaints, this stuff will protect your box.
I'm sure you will be happy with either product.
http://www.redlineoil.com/product.aspx?pid=45&pcid=7
But, I use the Amsoil and find it as good/better than the stock lube.
Drifting
Joined: Jul 2004
Posts: 1,356
Likes: 291
From: MA
I just changed the fluid on my 1996 GrandSport as the shifting was getting a bit notchy.
I used Amsoil and my transmission shifts a lot easier, I am very happy with it. Also got some shrink tubing (to cover the open connectors) and disconnected CAGS after 15 years of living with the damn thing.
I am much happier with the shift quality now.
I used Amsoil and my transmission shifts a lot easier, I am very happy with it. Also got some shrink tubing (to cover the open connectors) and disconnected CAGS after 15 years of living with the damn thing.
I am much happier with the shift quality now.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
I may have said this before but a redline phone rep recommended against using lightweight shockproof in the ZF6. They say MTL is the correct Redline replacement...
http://www.redlineoil.com/product.aspx?pid=45&pcid=7
But, I use the Amsoil and find it as good/better than the stock lube.
http://www.redlineoil.com/product.aspx?pid=45&pcid=7
But, I use the Amsoil and find it as good/better than the stock lube.