What trans fluid should I use in my new built tranny?
04-30-2009, 09:20 AM
#1
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What trans fluid should I use in my new built tranny?
I was originally thinking of going with royal purple max atf but my trans builder said its not a good idea to use synthetic in a trans, he said go with b&m trickshift non synthetic and change the fluid every 25k instead. When I looked on the b&m website it has a * that says not for use in electronically controlled transmissions.
Anyone else have some input on this before I order some?
Anyone else have some input on this before I order some?
04-30-2009, 01:07 PM
#2
ignore your trans builder. Either the latest Dextron fluid (what is it, Dex. VI now?), which is amazing stuff and is what the transmission calls for anyway(but its expensive as hell), or go with mobil one synthetic ATF. the mobil 1 is a lot cheaper than the dex, and is just about the same material from what maven was telling me.
Honestly, i have no idea why your trans builder would say not to use synthetic...
Honestly, i have no idea why your trans builder would say not to use synthetic...
04-30-2009, 01:46 PM
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yeah i thought it was weird too. As far as ive always known synthetic fluids are the best.
this one?
http://www.mobiloil.com/USA-English/...hetic_ATF.aspx
or this one?
http://www.mobiloil.com/USA-English/...on_VI_ATF.aspx
this one?
http://www.mobiloil.com/USA-English/...hetic_ATF.aspx
or this one?
http://www.mobiloil.com/USA-English/...on_VI_ATF.aspx
Last edited by celicacobalt; 04-30-2009 at 01:46 PM. Reason: Automerged Doublepost
04-30-2009, 07:26 PM
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im willing to do whatever it takes to keep this tranny alive after spending so much money. If the dextron stuff is gonna be at all better than I will pay for it.
05-02-2009, 05:44 PM
#6
fair enough. just for reference though, the Dextron V (which was used in the '05 cobalt and earlier GM models) is pretty inferior to mobil 1 synth ATF. Just assigning them numbers, i would say Dex V is a 4.0, Mobil 1 is a 8.0, and DEX VI is a 9.0 in performance, and there are plenty of members on here using their stock dex V in their 2005 cobalts.
05-02-2009, 06:09 PM
#7
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D E X R O N Vi
This information is from the General Motors TECHLINK magazine dated May 2007. You will notice that there was no DEXRON IV or V. DEXRON is not spelled with a T. The actual art work did not copy and paste into this message, sorry.
************************************************** *********************
DEXRONŽ-VI
Global Service-Fill Specification
figure 1
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 (Name Removed)
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.
************************************************** *********************
DEXRONŽ-VI
Global Service-Fill Specification
figure 1
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 (Name Removed)
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.
05-02-2009, 07:10 PM
#8
stay far far away from b&m trickshift, its bad stuff. ive seen race transmissions were guys have used it and they all show signs of lack of lubrication (burned up bushings, bad bearings). i wouldnt touch that stuff with a 10' poll.
ive used mobil 1 synthetic with good luck, but dexron VI would be my choice.
ive used mobil 1 synthetic with good luck, but dexron VI would be my choice.
05-03-2009, 08:29 PM
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I've seen some people mention Synchromesh on other forums. Anyone ever had any experience with it, or is it a completely different product I'm confusing with Trans fluid?
05-03-2009, 09:17 PM
#14
syncromesh is a completly different fluid that was used in gm fwd car and truck manual transmissions in the 90s and early 2000s.. it is a very good fluid, however not compatable with our transmissions.
in this thread we are discussing fluid for an automatic, not a manual
in this thread we are discussing fluid for an automatic, not a manual
05-03-2009, 10:35 PM
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05-04-2009, 02:46 AM
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syncromesh is a completly different fluid that was used in gm fwd car and truck manual transmissions in the 90s and early 2000s.. it is a very good fluid, however not compatable with our transmissions.
in this thread we are discussing fluid for an automatic, not a manual
in this thread we are discussing fluid for an automatic, not a manual
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