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Best fluid for tr3650?

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  • Best fluid for tr3650?

    Anyone use the royal purple synchromax? If so which weight?

  • #2
    Im using penzoil synchromesh. I like it, tranny feels like it shifts smoother without the 1 - 2 shift grind
    2002 4.6L 5spd S281

    So fast i make speedy gonzales look like regular gonzales

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    • #3
      Havoline DEXRON III

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      • #4
        i always used the GM synchromesh

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        • #5
          gm syncromesh or motorcraft atf

          and don't overfill it. google tremec 3650 tsb.

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          • #6
            After reading more on it i might just do a synthetic atf like royal purple, i saw they have the syncromax but according to a tsb sent out by tremek they prefer you use an atf on the 3650.

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            • #7
              Motorcraft ATF and 1 bottle of Motorcraft Friction Modifier. The FM helps the friction material on the blocking rings.

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              • #8
                I personally used Royal Purple Synchromax. I never had any issues. And the transmission was quieter and shifted a lot smoother than what ever was in it from the factory. Its not like the transmission was loud before, but I could tell it was quieter...

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                • #9
                  I like both the Penzoil Synchromesh (same as the GM, but cost less...also what's in my T-56) and the RP Synchro-max...I'll probably put that in next to compare the 2.
                  2012 Silver Mustang GT 5.0:stock.
                  '00 Performance Red Mustang GT 4v turbo 6-speed 540rwhp/572rwtq (SOLD)
                  '07 Honda CB919 (SOLD)

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                  • #10
                    I believe there's only one weight the Syncromax comes in.

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                    • #11
                      i use royal purple synchromax in my t-5 that ^^^^^^^^^^ built

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                      • #12
                        Originally posted by thesource View Post
                        I believe there's only one weight the Syncromax comes in.

                        Your right.

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