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Transmission fluid you use that IMPROVED shifting over stock

Discussion in 'Driveline' started by ChicagoMike, Feb 13, 2004.

Which transmission fluid have you used in your T56 with better shifting noticeable

  1. GM SynchroMesh

    160 vote(s)
    30.8%
  2. Amsoil ATF

    26 vote(s)
    5.0%
  3. Mobil 1 Synthetic ATF

    74 vote(s)
    14.3%
  4. Royal Purple SynchroMax

    99 vote(s)
    19.1%
  5. Castrol Syntorq

    2 vote(s)
    0.4%
  6. Other

    158 vote(s)
    30.4%
  1. ChicagoMike

    ChicagoMike Modification Addict Established Member

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    Pick which transmission fluid you use in your T56 that has improved shifting over the STOCK ATF fluid that you have had in your transmission for at least 1000 miles with NO problems.

    I will not be including Redline D4 ATF or Redline MTL in the poll because it has been proven to swell the carbon rings.

    Check out this information on a Firebird FAQ about the T56:

    http://www.cnyfirebird.com/showArticles.asp?ID=15

    "THE Word" on 1998-2002 Manual Tranny Lubricant
    The question about whether one should run synthetic ATF or even a non-ATF gear lube in the f-body's Borg-Warner/Tremac 6-speed tranny has been bouncing around. Mark DeCarlo, co-organizer of CNYF, has tracked down the answer. Mark reports....

    "I spoke with the T-56 expert at Tremec. He said that the Mobil 1 Synthetic ATF is an excellent choice for the T-56, PROVIDED that the T-56 is a 1997 model or newer.

    DO NOT run the synthetic ATF in the pre-1997 T-56 units. It will destroy the paper on the blocker rings. And do not run it in a manual trans with brass blocker rings either, because it will ruin those also.

    Tremec changed the blocker rings to the carbon fiber type for the 1997 model year and synthetic ATF will not degrade these.

    I asked about the GM SynchroMesh and he said it was good, but not quite as good as the Mobil 1 Synthetic ATF. The SynchroMesh fluid comes in the Tremec 3550.

    He said you should have no problems running the Mobil 1 Synthetic ATF in the T-56.

    Notice how I keep saying "Mobil 1 Synthetic ATF". He said stay away from the other aftermarket racing type synthetics, as they have extra additives that can degrade components.

    I asked about the Castrol Syntorq gear lube. He said you could use it (and they used to in the Viper), but you will encounter hard shift in cold weather and cold clash.

    I asked if GM would honor the warranty if something were to happen to the trans while the Mobil 1 Synthetic ATF was installed and he said they would.

    But the one thing I would like to point out; just because a bottle says that it supercedes a different product, doesn't make it necessarily so. If someone had grabbed the bottle of synthetic ATF and read that it meets and exceeds all dino ATF specs; and then installed it in their pre-1997 F-body, it would have ruined the box. So don't believe everything you read."
     
    Last edited: Feb 13, 2004
  2. 03 COBRA SB

    03 COBRA SB Rocky Mtn. SVT Cobra Established Member

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    Red Line works great, tried Mobil 1, still shifted hard cold, 1st to 2nd.

    and who said that redline is hard on the rings?
     
    Last edited: Feb 13, 2004
  3. 03InThe11s

    03InThe11s i meant 10s :) Established Member

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    everybody i know of who has had it. i believe im going to leave mine alone, i think the stock stuff is good for now.
     
  4. bones

    bones Member Established Member

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    SoCal
    do a search for "tranny fluid fyi"
     
  5. newcastle

    newcastle _____________ Established Member

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    dixon, ca
    I put in Redline D4 ATF. Love it.
     
  6. 03Redfire Cobra

    03Redfire Cobra Toss my salad? Established Member

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    I use redline. It dosent like the cold though...
     
  7. 03blackCOBRA

    03blackCOBRA Civil PE Established Member

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    Nov 6, 2002
    Location:
    West Coast
    D4 here, no problems, much better than stock........30k miles and counting
     
  8. ak_cobra

    ak_cobra New Member Established Member

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    Nov 9, 2003
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    alaska
    anybody used neo in there cobras? i used it in my old wrx and it was awesome stuff....
     
  9. 03DOHC

    03DOHC Moderator Established Member

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    Leave the stock fluid. It works great!
     
  10. TargeT

    TargeT New Member Established Member

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    Oct 28, 2003
    Location:
    in the driver seat
    GM syncromesh
    used it in my DSM's, 'n loved it, instant change in the shift feeling (tho is it plesebo? who knows)
     
  11. 03yllwguy

    03yllwguy Daily driven since 2003 Established Member

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    SD, Ca
    I used Amsoil and am not impressed especially for the $10.00 a quart. I'm going to change back to stock. I don't think the engineers are that poor at picking the correct fluid.
     
  12. FordFreak

    FordFreak New Member Established Member

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    Orange County, CA
    Anyone have comments on royal purple?
     
  13. NightEnforcer

    NightEnforcer New Member Established Member

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    Tucson, AZ
    I changed from stock to Redline. Not much differenece. Changed again to GM Synchromesh---BIG DIFFERENCE. Shifts much smoother in all kinds of temps.
     
  14. trey193

    trey193 New Member Established Member

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    Synchromesh here as well. Couldnt be happier with the way my car shifts!
     
  15. ShelbyGuy

    ShelbyGuy Steers With the Throttle Established Member

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    Eating a steady diet of government cheese, and liv
    simply changing the stock fluid with fresh stuff made a huge difference in my car.

    if redline, amsoil, royal purple, et al give you a warm feeling, then go with them. Me? i'll just keep fresh atf in it.
     
  16. ChicagoMike

    ChicagoMike Modification Addict Established Member

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    I ended up going with the Royal Purple Synchromax. Night and day difference over the stock ATF.
     
  17. SinisterX

    SinisterX Makin ALL KINDS of gains Established Member

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    West Central, NY
    Amsoil ATF works like magic.
    I have never driven a better tranny since.

    It's good when cold, and shifts like butter when warm.
     
  18. HaulinBuggy

    HaulinBuggy New Member Established Member

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    :thumbsup:
     
  19. bassin247

    bassin247 hates reposts Established Member

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    I agree.
     
  20. toofast4u

    toofast4u Versatilist Established Member

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    Atlanta, GA
    I have D4 and shifting at first was better, but I can no longer slam shift 3 it blocks everytime. I am switching back to stock stuff after the stuff Tremec said about using non Dextron III fluids screwing up the rings.
     

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