View Poll Results: What is the best manual transmition fluid?

Voters
46. You may not vote on this poll
  • Other? (please elaborate)

    22 47.83%
  • 90 weight

    2 4.35%
  • Royal Purple Synthetic ATF

    14 30.43%
  • Mobil 1 ATF

    8 17.39%
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Thread: 5-speed tranny fluid

  1. #1
    Join Date
    Oct 2003
    Location
    Las Cruces, NM
    Posts
    279

    5-speed tranny fluid

    Ok, wha't have "you" had the best luck with as far as manual transmision fluid goes?

    Let democracy rule.
    Last edited by RichM; 01-30-2004 at 11:04 PM.

  2. #2
    Join Date
    Apr 2002
    Location
    Forked River, NJ
    Posts
    2,092
    GM Synchromesh

  3. #3
    Join Date
    Apr 2002
    Location
    Caledon, Ontario ... CANADA !!!
    Posts
    7,561
    I'll second the GM Synchromesh fluid, with a bit of Ford friction modifier thrown in for good measure.


    cheers,
    Ed Nicholson
    SCCoO

  4. #4
    Join Date
    Oct 2003
    Location
    Las Cruces, NM
    Posts
    279
    well decided on AMSoil synthetic ATF. I talked with them and they seem to beleive it will work fine. The guy at the tranny shop said that the AMSoil would be a good choice also.Also one of the guys at work is a "perfered customer" and gets a discount.
    I do intend on leaving it short about 4 ounces until I decide it it needs friction modifier.
    I'll try to update when the motor and tranny are back in.

  5. #5
    Join Date
    Apr 2004
    Location
    Mason, Mi
    Posts
    59
    I used Mobil 1 in the T5s I have ran, I have shattered the input shaft in one, bent the shift pivot mechanism in another and neglected to check the fluid in another until it stopped being nice to me. None of the three had failures resulting from a bad lubricant just a bad owner .

  6. #6
    Join Date
    Jan 2003
    Location
    Columbia, SC
    Posts
    3,468
    I use Redline D4 Synthetic ATF with no friction modifier. No problems to report.

  7. #7
    Join Date
    Apr 2003
    Location
    MI
    Posts
    714

    Redline D4

    I just recently changed over my shifter to a B&M Ripper, and also changed the fluid while I was at it, like Duffy I also used the Redline D4 Synthentic with no friction modifier, 1 week in no problems, so I would second duffys choice as well. Mike

  8. #8
    Join Date
    May 2003
    Location
    Robinson, Pennsylvania
    Posts
    1,122
    i have 217 k miles on mine i use dextron mercon i try to change it every year

  9. #9
    Join Date
    Oct 2003
    Location
    Southern Calilfornia
    Posts
    90
    Mobile 1 5W/30 motor oil with friction modifier.
    Shifts Smooth, big improvement over standard ATF.
    Last edited by matt59; 08-05-2012 at 06:29 PM.

  10. #10
    Join Date
    Apr 2002
    Location
    Greater Cinncinnati area
    Posts
    124
    "I use Redline D4 Synthetic ATF with no friction modifier. No problems to report."

    Me too! My transmission would not go into 1st without hitting another gear, before the fluid change. Afterwards it shifted 100% better and would shift to 1st even after it was hot.

  11. #11
    Join Date
    Jun 2002
    Location
    Illinois
    Posts
    1,744
    I recently used the GM syncromesh spec under the Penzoil brand, and 4 oz frictoin modifier.

    My 2nd gear syncrho is starting to wear and the change of fluid made it shift significantly better, and its quieter when it does grind. I am not sure if this is due so much to the type of fluid as it is to the fact that it is new fluid.

    The only possible negative I have noticed is it becomes noticeably harder to shift at lower temperatures, such as upper 50s. I don't think I would have had this problem with the Mobil 1 synthetic ATF.

  12. #12
    Join Date
    Aug 2002
    Location
    Down by the river.
    Posts
    311
    Where might one be able to purchase this 'redline' transmission fluid?

  13. #13
    Join Date
    Nov 2002
    Location
    Melbourne, Florida!
    Posts
    926
    I also use Synchromesh with a bit of friction modifier. And, I also noticed that it is harder to shift in cooler temperature, until it warms up a bit.

  14. #14
    Join Date
    Jul 2002
    Location
    Boston, MA
    Posts
    7,332
    Syncromesh is a bit thick when cold. But offers better protection and feel when the fluid is HOT. And thats when it matters.

  15. #15
    Join Date
    Nov 2004
    Location
    Plano, Texas
    Posts
    291
    gm synchromesh

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