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  • G5mr transmission fluid

    What is the correct fluid to use? I used Dex/Merc ATF last time and want to make sure this wasn't a factor in my tranny dying. It died from the diff pin coming out so i'm thinking it's not fluid related.
    91 Festiva BP Autocross/Track/Rallycross hopeful
    14 C7 Z51


  • #2
    //what made the pin spin in the first place??
    Reflex paint by Langeman...Lifted...Tow Rig

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    • #3
      Much much abuse. Weekly drag racing.
      91 Festiva BP Autocross/Track/Rallycross hopeful
      14 C7 Z51

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      • #4
        some guys on the escort site just run 5w30, some syncromesh, i used half and half all the guys on the feoa site say it ok
        -90 festiva - bp swap "relentless" (thanks matt) aspire swap, pacesetter, underdrive pulley
        -90 festiva - surf blue (undetermined destiny) wanna keep but wifey says noooooooo

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        • #5
          i use merc/dex atf
          I know its a piece of crap but im still faster...and its 100% legal!!!!!

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          • #6
            Alright, I guess i'm all good. Thanks guys
            91 Festiva BP Autocross/Track/Rallycross hopeful
            14 C7 Z51

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            • #7
              try some syncromesh.

              I swear by this stuff... it completely eliminated my 323 gtx awd's grinds over night.

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              • #8
                I run 80W90 gear oil. The ATF is too thin IMO especially for summer driving.

                I've heard really good things about synchromesh but I haven't run it myself.

                IMHO - if you abuse the diff the pin will come out no matter what fluid
                1991 Mercury Capri XR2 "GTXR2" BPT Swapped AWD Conversion

                Rocketchips!
                High Flow B3/B6/BP VAF Adapters for sale!
                Bolt-on Weber Carb Adapters!

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                • #9
                  I use dex/merc atf Ive had 3 trannys stuck in gear that were all running gear oil when I got them so this is why I use atf never had a problem.
                  93 L B6T DD http://www.fordfestiva.com/forums/sh...ad.php?t=37751
                  RIP_90 LuX http://www.fordfestiva.com/forums/sh...ad.php?t=32249
                  RIP 88 LX / B8-MEhttp://www.fordfestiva.com/forums/sh...ad.php?t=26398

                  RJ

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                  • #10
                    Dex 3 and power punch gear additive
                    Next change probably will be
                    Valvoline Max Life ATF.
                    Reflex paint by Langeman...Lifted...Tow Rig

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                    • #11
                      Originally posted by festyfreak39 View Post
                      try some syncromesh.

                      I swear by this stuff... it completely eliminated my 323 gtx awd's grinds over night.
                      I switched to Redline ATF+4 in my 90 Taurus SHO because of grinding in 2nd and 3rd with petro based ATF and it totally eliminated the grinding. Redline is some good stuff!
                      Semper Fi til I die!

                      1993 Fescort GT 1.8 BP automatic Kia Rio front struts and cut springs Cut Front Festiva springs with Monroe Aspire struts in rear


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                      • #12
                        I'm also pretty curious about this, I decided to go with some thicker stuff with my F series, hope I didn't make the wrong decision.
                        1992 white L, Bp, American racing 13's, stock trans.
                        1991 White L, BP/F5MR, protege header, full aspire swap with gr2's, seats, and sway bar, 15" konig's, short throw, escort console.
                        1991 blue L, 5 speed.
                        1988 red L-plus-all stock.

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