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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. tankerman1981

    tankerman1981 New Member Established Member

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    i use mobil 1 Synthetic ATF and I noticed a diffference when I replaced the fluid but everyone has there own opinions and all.... I'll stick with the Mobil 1....
     
  2. DocSVT

    DocSVT New Member Established Member

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    Mar 4, 2005
    Location:
    Dallas, TX.
    RP got my vote

    I am another happy RP synchromax user. I always figured it was just another "snake oil", but it really did help quiet mine down and improve the shifing, oh wait I did add a MGW at the same time ;-)
     
    Last edited: Nov 20, 2005
  3. Fleck 5

    Fleck 5 New Member Established Member

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    Yardley, PA
    I am going to ttry the Royal Purple. I'll let you know how it goes.
     
  4. MIKEC501

    MIKEC501 New Member Established Member

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    BRADENTON FL.
    i two am going to try r.p. this weekend hope it works.
     
  5. SpectorV

    SpectorV Active Member Established Member

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    Birmingham AL
    I think im going to go RP as well. I may have to order it... I doubt any local vendors carry it.
     
  6. Fleck 5

    Fleck 5 New Member Established Member

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    Yardley, PA
    I put the RP synchromax in two weeks ago. The mechanic said that the fluid was either real dirty, or that the previous owner had changed the fluid (I bought the car with 4,500 miles). because it was not the typical stock transmission fluid color.

    I did not notice any difference in switching from whatever was in there before to the synchromax. The tranny still shifts rough.
     
  7. Screamin Cobra

    Screamin Cobra Slam'd Cam'd Z06 Established Member

    Messages:
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    Oct 31, 2005
    Location:
    Baton Rouge, LA Vehicle: SRT10 Viper
    ima have to go with that
     
  8. badboy

    badboy Done with it! Established Member

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    SF bay area
    This thread has been going on for ever but I just noticed something. I took my tranny apart to replace the input shaft (2004 T-56) and the blocker ring has paper on it. It is NOT CARBON FIBER. I have been running RP Synchromax for about 3000 miles and the paper seems to be intact. BUT, I am wondering if I should go back to the Dexron III just to be safe??
     
  9. SSSNAKE04

    SSSNAKE04 New Member Established Member

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    Florida
    what kind of modifier did ya use?? lucas????????
     
  10. palehorse

    palehorse New Member Established Member

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    Location:
    utah
    Well after reading this entire thread, and parts of it twice, I called Tremec and spoke with a tech person. This is a sumary of what he said. The number 1 recomended transmission fluid for a chevy or ford application is Dexron III. He said the second choice is the GM syncromesh part#12345349. When I asked him about friction modifier he offered no opinion as to it being good or bad, but did indicate it was not necessary.

    He did say that under normal driving conditions the transmission fluid is a "fill for life" but when I told him that I was changing the shifter and my car as 28,000 he said it was a good idea to change it.

    He did not specifically say that a full synthetic was good, bad or otherwise. He did not say watch out for brand X as it will ruin your transmission. Finally, he said that for every person that has called and said "brand X is the best" he has had another say brand X is the worst thing I have done."

    Based on that, I will be going with the GM syncromesh and no friction modifier.
     
  11. DOHC Holliday

    DOHC Holliday robot clean Established Member

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    CT, RSN
    FWIW, Chrysler ATF+4 is my ATF of choice in most manuals.
     
  12. palehorse

    palehorse New Member Established Member

    Messages:
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    Jan 20, 2005
    Location:
    utah
    FYI I called around to verious GM dealers and got prices that varied from $10.50-$15.50 a quart. I just got Penzoil syncromesh (penzoil makes all the GM stuff as has been previously stated on this thread) for $6.50 at autozone.
     
  13. YardSpecial

    YardSpecial War Veteran X 2 Established Member

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    Taco WA
    any updates ??
     
  14. Fleck 5

    Fleck 5 New Member Established Member

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    Mar 15, 2004
    Location:
    Yardley, PA
    After a couple weeks of using the Royal Purple, I am not impressed. The shifting is probably a little worse. I think I might switch to the synchromesh.

    Does anyone know what they are using in the new Z06's?
     
  15. HawkMech

    HawkMech Wildhorses Rule!!! Established Member

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    Dec 19, 2004
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    Clarksville, TN
    Does anyone know if I can pick up a few quarts of the Royal Purple Syncromax at any auto parts store, or is it something that I'll need to order online?
     
  16. Fleck 5

    Fleck 5 New Member Established Member

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    Mar 15, 2004
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    Yardley, PA
    Try a speed shop if you have any near you. I tried Pepboys but they do not carry the RP synchromax.
     
  17. palehorse

    palehorse New Member Established Member

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    Jan 20, 2005
    Location:
    utah
    I have been driving around now with the Penzoil Synchromesh but I switched to MGW shifter at the same time. So all I can tell you is the two together shifts much better. FYI-- kind of off topic, but when I drained the original transfluid at 28,000 miles it looked and smelled brand new. I was shocked at how clean the fluid was. It certainly did not need to be changed.
     
  18. 2814v

    2814v Active Member Established Member

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    Feb 16, 2004
    Location:
    central Cal.
    I have not had a problem with the stock fluid, a little notchy cold but not bad. When I change mine it will be stock or mobil1, no modifier.
     
  19. hurtindude

    hurtindude Banned

    Messages:
    172
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    Apr 24, 2006
    Location:
    A Stones throw from Foxboro, MA
    running royal purple synchromax here. notice no difference when compaired to stock. next change will prolly just go back to stock atf.
     
  20. phillySVT

    phillySVT Bang Bang Established Member

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    mustangtuning.com
     

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