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2001 SLS (Diamond White)
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Discussion Starter #1
Does anyone know of a manufacturer of a true group IV ATF, besides amsoil???



Thanks,
Ed
 

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The Northstar Tuner
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http://www.kendallmotoroil.com/NR/rdonlyres/1BD89E9E-7418-4C1C-BADF-0EA34AE747CD/0/K_dexron_VI_ATF.pdf


just a little info
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DEXRON®-VI ATF
General Motors Powertrain has recently upgraded to DEXRON®-VI ATF with the start of 2006 vehicle production.

Current and prior models that had used DEXRON®-III must now only use DEXRON®-VI.

All 2006 and future models that use DEXRON®-VI are to be serviced with DEXRON®-VI fluid only.

DEXRON®-VI is an improvement over DEXRON®-III in the following areas:

DEXRON®-VI

Extended Factory Fill For Life---160,000 km (100,000 mi) For Cars and Light Duty Trucks*---80,000 km (50,000 mi) (Severe Use) For Cars and Light Duty Trucks*

Clutch Friction Stability----Improved 100%

Clutch Durability Due To Fluid----Improved 120%

Oil Film Thickness----Increased 20%

Fluid Oxidation----Improved 100%

Foam/Aeration----Improved 150%

Shear Stability----Improved 200%


* These ATF change intervals remain the same as DEXRON®-III for the time being.
 

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2001 cadillac sts
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285 Posts
Hey clakz71, when you say shifting was improved, do you mean smoother or more aggresively? Also could we you use the B&M transmission fluid for firmer shifts in our trannies?
 

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2006 STS V8 AWD, '95 Ford Ranger
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I had a B&M Hydrostick transmission in a '58 Chevy back in the early '60s. It worked great and B&M has been building good stuff ever since.
 

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2000 Eldorado ESC
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Hey clarkz71, when you say shifting was improved, do you mean smoother or more aggresively? Also could we you use the B&M transmission fluid for firmer shifts in our trannies?
I mean smoother. I have a bad input speed sensor (code P056/OBD I) and the shifting is more firm then stock with that problem. The Dexron VI made it shift noticeably smoother.
 

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what you are actually feeling is the fact that the older fluid has been allowing the cluch packs to shudder but at high frequency so the new stuff has a friction modifier to help with that and its a synthetic too.
As for Amsoil I wouldnt put that garbage in my worst enemies lawn mover as i pushed him and it over a cliff.
 

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White Diamond '03 DHS (with DTS floor shift)
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WOW, where were you when Steve was touting it? Now THAT would have gotten interesting.
 

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what you are actually feeling is the fact that the older fluid has been allowing the cluch packs to shudder but at high frequency so the new stuff has a friction modifier to help with that and its a synthetic too.
I don't know if my clutch packs were doing anything, but if you know cadillacs
you know that a bad transaxle input speed sensor will cause even a new transaxle with new fluid to shift firm,
as the failure increases line pressure by default. That's what I'm feeling.
As a side note, the original fluid only had 55000 miles and looked as red/pink as new fluid.

.
 

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2004 Escalade, 07 Road King, 08 Challenger SRT8
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LOL!!!

MonzaRacer, don't sugar-coat it, how do you REALLY feel about Amsoil????
 

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The Northstar Tuner
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Hey clakz71, when you say shifting was improved, do you mean smoother or more aggresively? Also could we you use the B&M transmission fluid for firmer shifts in our trannies?
What is B&M's blue trans fluid?
When was it developed?
How many times has it been updated?
Who makes it?
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Mopar had to change the fluid in the early 90's because of clutch chatter. They updated it many times before they got a fluid that works. It started out as 7176D. Then it was 7176E. Then it was ATF+3 and know it is ATF+4.
Mopars also use in just a couple of cars Mitsubishi Transmissions. Mopar say that the latest version of ATF+4 can be used, But Mits trans fluid has a strong odor of friction modifier. I have always used the Mits fluid in the Mits trans.
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GM had a fluid that worked OK. While many other car companies had trany problems in FWD cars GM was doing pretty well. Petro-Canada with GM developed Dexron VI. This fluid smells like it has a lot of friction modifier in it. This is a far superior fluid over the last. GM really never needed to fix the fluid like some other companies did.
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You have been running an out dated fluid in you car. You had no per say fluid problems. Now you have a high dollar fluid in your car and it will work so much better.
Look at the specs I listed before.


http://www.gm.com/automotive/gmpowertrain/transmissions/DEXRON-VI-Service_Fill_Release.doc
http://www.petro-canada.ca/pdfs/IM_8017_E_v14.pdf
 

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06 CTS-V (sold)
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Does anyone know of a manufacturer of a true group IV ATF, besides amsoil???

Thanks,
Ed
Ed,
I would have said Mobil 1, but now I'm not so sure as it appears they are now using a significant portion of Group III basestock in their mainline Mobil 1 motor oil. Redline uses a Group V basestock and I've never been able to confirm what Royal Purple uses. I suspect that they use a Group III/IV blend, but they are very tight lipped about their basestocks.

FYI, the AMSOIL ATF is now labeled by AMSOIL to be suitable for both Dexron III and VI requirements. This is the fluid I just put in my 06 CTS-V, and have been running my 02 Z06 on the track for years (without any tranny failures). :cheers:
 

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1995 Sedan De Ville (4.9 L)
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This is a very dumb question, but... I thought III = 3 and IV = 4, V = 5, and VI = 6 (am I correct on this?), soooo, where are DEXRON-IV and DEXRON-V? GM didn't like them or what?

DEXRON®-VI ATF
General Motors Powertrain has recently upgraded to DEXRON®-VI ATF with the start of 2006 vehicle production.

Current and prior models that had used DEXRON®-III must now only use DEXRON®-VI.

All 2006 and future models that use DEXRON®-VI are to be serviced with DEXRON®-VI fluid only.

DEXRON®-VI is an improvement over DEXRON®-III in the following areas:

DEXRON®-VI

Extended Factory Fill For Life---160,000 km (100,000 mi) For Cars and Light Duty Trucks*---80,000 km (50,000 mi) (Severe Use) For Cars and Light Duty Trucks*

Clutch Friction Stability----Improved 100%

Clutch Durability Due To Fluid----Improved 120%

Oil Film Thickness----Increased 20%

Fluid Oxidation----Improved 100%

Foam/Aeration----Improved 150%

Shear Stability----Improved 200%


* These ATF change intervals remain the same as DEXRON®-III for the time being.
 

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06 CTS-V (sold)
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This is a very dumb question, but... I thought III = 3 and IV = 4, V = 5, and VI = 6 (am I correct on this?), soooo, where are DEXRON-IV and DEXRON-V? GM didn't like them or what?
Your recollection of Roman Numerals is correct... and I have no idea what GM did with the numbers IV and V. I've never seen any reference to Dexron IV or V (other than a few typos of people who meant the new VI but assumed GM went to IV).
 

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DEXRON®-VI
Global Service-Fill Specification


figure 1

fig1_sm.jpg


In early 2005, General Motors released a newly developed automatic transmission fluid (ATF) for the factory fill of all GM Powertrain stepped-gear automatic transmissions. The new fluid provides significantly improved performance in terms of friction durability, viscosity stability, aeration and foam control and oxidation resistance. In addition, the fluid has the potential to enable improved fuel economy and extended drain intervals. Because the performance of the new fluid far exceeded that of the DEXRON-III service-fill fluids available at the time, it became necessary to upgrade the DEXRON service-fill specification in order to ensure that similar fluids were available in the market for service situations. This latest upgrade to the service- fill specification is designated DEXRON-VI (fig. 1).



Since General Motors introduced the first ATF service-fill specification in 1949, it has been necessary to upgrade the specification periodically.

The upgrading process ensures that available service-fill fluids are of an appropriate quality for use in transmissions that have been designed around the factory-fill fluid performance.

TIP: As with previous upgrades, DEXRON-VI fluids are designed to be backward compatible with earlier transmission hardware. More importantly, earlier type fluids are not forward compatible with transmission hardware that was designed to use DEXRON-VI fluid.

DEXRON-III is not compatible with the most recently designed transmissions, and the use of these earlier type fluids could result in transmission damage. All current calibrations and certification tests are now conducted with DEXRON-VI ATF. DEXRON-III fluids should not be used for those applications where the owner manual recommends the use of DEXRON-VI.

TIP: GM does not license or support obsolete ATF specifications or the use of fluids that are being marketed against cancelled specifications.

All DEXRON-III licenses expired at the end of 2006 and will not be renewed. Beyond that date, GM will support only DEXRON-VI fluids for use in Hydra-Matic transmissions. Avoid fluids sold in the market after that date bearing claims such as “suitable for use in
DEXRON-III applications” or similar wording. DEXRON-VI licensed fluids are fully backward compatible and can be used in all applications covered by earlier GM ATF specifications.

The use of unlicensed fluids and/or non-GM approved aftermarket additives may prove detrimental to transmission performance and void warranty coverage.
- Thanks to Angela Willis

Precaution: DEXRON-VI in Manual Transmissions

When DEXRON-III is indicated as the fluid fill for manual transmissions and transfer cases, DO NOT use DEXRON-VI. Instead, use GM Manual Transmission Fluid p/n 88861800 in these components.

TIP: Refer to PIP3836B (Feb. 2007).

If the manual transmission or transfer case indicates use of DEXRON-VI, then, of course, it should be used.

Purging Equipment

Before filling your bulk fluid equipment with DEXRON-VI, be sure to purge the old oil from it.

Also, be sure to purge your J-45096 Transflow machine before using it with DEXRON-VI.
 

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Subject: Manual Transmission Fluid Usage In 2007 And Prior Manual Transmissions And Transfer Cases - keywords case fluid manual transmission transfer #PIP3836B - (02/05/2007)


Models: 2007 and Prior Passenger Cars and Trucks

2007 and Prior HUMMER H2

2007 HUMMER H3

2007 and Prior Saturn Passenger Cars and Trucks




--------------------------------------------------------------------------------

This PI is superseded to add a note under concerns. Please discard PIP3836A.


--------------------------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Use of manual transmission fluid part number 88861800 U.S. (88861801 Canada) in place of Dexron III.

Important Note: If the vehicle owners manual lists Dexron VI as the recommended transmission, transaxle or transfer case fluid disregard any information supplied in this PI. Use eSI and or the vehicle owners manual to determine what type of fluid should be used prior to referencing the below information

Recommendation/Instructions:
Manual Transmission fluid part number 88861800 U.S. (88861801 Canada) is currently available through GMSPO. Current and past model vehicles listed above with either a manual transmission or transfer case that REQUIRE Dexron III should use the above listed manual transmission fluid. This fluid is a direct replacement for Dexron III in manual transmissions and transfer cases. DO NOT use Dexron VI in place of the manual transmission fluid in any manual transmissions or transfer cases as a failure may result.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
 

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I read that to say that the DEXRON-VI is fully compatible with DEXON-III, meaning that when doing a normal drain/fill service on a DEXRON-III car, no additional steps are necessary (like trying to pump out the old fluid, etc), correct? Simply drain as much DEXRON-III as you can, and fill with a like amount of DEXRON-VI?
 

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Autozone has Castrol Dexron6 for $4.99
I have a 2000 Deville, can I make the change from mercon-dexronIII to this one?
Has anybody poured a Transmission fix Lucas just for extra protection?
what do guys think of it?
my Caddy has just turned 100K
 
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