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TURBO 400 FLUID DEXTRON III OR TYPE F ?

Discussion in 'V-Drives' started by wettrthebettr, May 23, 2019.

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  1. wettrthebettr

    wettrthebettr Well-Known Member

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    I would like to know why some Turbo 400 owners
    use Dextron III and some use Type F and some use Dex/Merc?

    Art Carr says Dextron III
    Craig's High Performance says Type F
     
  2. mash on it

    mash on it Beyond Hell Crew

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    Absolutely Dextron 3

    Ford type f has an abrasive in it.

    Even modern Ford transmissions don't use type F.

    Dan'l
     
  3. Blue

    Blue Well-Known Member

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    I get leery leary about DexIII since it's no longer spec'd by GM. Dex VI is backwards compatible and better in every way. I also toss Lube Guard in every thing
     
  4. thetub

    thetub Well-Known Member

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    just did this same exact thing in my 2003 2500HD pickup

    Lubegaurd suppose to be good chit...
     
    Blue likes this.
  5. Blue

    Blue Well-Known Member

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    I'm not an additive fan but LubeGuard is the only company to get actual OEM approval's and be used is TSB's with success. It's good stuff
     
  6. wettrthebettr

    wettrthebettr Well-Known Member

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    I've been running dex III in my truck for 17 years no problem, then someone told me to try dex VI
    So I did now the output shaft seal leaks.
    The shop told me that dex VI is a lower viscosity than dex III
     
  7. Blue

    Blue Well-Known Member

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    It is lower viscosity and synthetic base stock but I'm guessing the detergents ij the new ATF had more to do with the seal leak than the thinner viscosity. TheTdex vi probably cleaned up some crud that was keeping it from leaking.
     
  8. wettrthebettr

    wettrthebettr Well-Known Member

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    10-4
     

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