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Thread: Mixing ATF-DW-1 and ATF-Z-1

  1. #1
    Senior Member HondaSUV Mentor
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    Default Mixing ATF-DW-1 and ATF-Z-1

    I am about to change the ATF. Bought a crate of ATF-DW-1. Apparently, Honda changed the fluid name (constituents also?) from ATF-Z1 to ATF-DW-1. I hear that the new fluid can be used on old Vs and old and new are compatible and can be mixed.

    Search provides no leads on DW-1.

    Any thoughts?

    Thank you!
    Gopal
    99LX, Auto, Security (65K), Valves (69, 80, 84K), HKOptimoH727 (105866K), Tint (81K), ATF (104.6K), Timing belt, Waterpump, EngineSeals, Coolant, Brakefluid, PSteeringfluid (84K) Miles: 59093 (061103), 68110 (050604), 74117(010306), 79488(072507), 84038 (061408 ), 87387 (090509), 94301(101010), 97605(031711), 104600(052212)

  2. #2
    Video Master HondaSUV Elder roadster's Avatar
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    What is the color of fluid, RED. I am sure I will be in the same boat soon
    Underdog: [whenever something goes wrong] I am a hero who never fails, I can't be bothered with such details.
    190K from OAM 2 mods, unconventional link to all maint.http://www.hondasuv.com/members/show...089#post480089

  3. #3
    Senior Member HondaSUV Mentor
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    Per Honda Service News November 2010:


    Short answer is it's backward compatible BUT Z1 is not approved for use in 2011 or newer.

    "Honda parts stock has a new ATF available. It's called ATF DW-1 and it replaces ATF Z1. It’s been designed to improve transmission performance when it’s cold, which helps with fuel economy. ATF DW-1 is the factory fill for all ’11 Honda models. Eventually it will be our only ATF, but you can keep using ATF-Z1 in all ’10 and older models for now. However, make sure that you DO NOT use ATF-Z1 in any ’11 and newer models.

    ATF DW-1 is available in 1-quart bottles (P/N 08200-900."


    http://www.piloteers.org/forums/atta...w1_a10110h.pdf
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    Senior Member HondaSUV Elder 'Curly Q Links''s Avatar
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    The keyword 'magnet' will get you lots of hits about ATF drain-n-fills, even videos.

    Do it, drive it, do it, drive it, do it again.

    Record the details in your little book. I'm surprised you don't show a link to FUELLY on your signature.

    Last edited by 'Curly Q Links'; 03-15-2011 at 07:05 PM. Reason: added link to fuelly
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  5. #5
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    Thank you all. I'll change the fluid and let you know.

    Another question. Is it better to do the "drain-fill" thrice on the go or do it over a few days? In other words, how much should I drive between each "drain-fill" event?

    Roadster - I haven't yet opened to carton yet. Will let you know when I do. Hopefully it is red.
    bechtoea - Thanks. Good to know about the backward compatibility. Anyway, maybe I am the guinea pig this time
    CurlyQ - Thanks for the link to Fuelly. Really useful.

    Gopal
    Last edited by Gopal; 03-16-2011 at 07:51 AM.
    99LX, Auto, Security (65K), Valves (69, 80, 84K), HKOptimoH727 (105866K), Tint (81K), ATF (104.6K), Timing belt, Waterpump, EngineSeals, Coolant, Brakefluid, PSteeringfluid (84K) Miles: 59093 (061103), 68110 (050604), 74117(010306), 79488(072507), 84038 (061408 ), 87387 (090509), 94301(101010), 97605(031711), 104600(052212)

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    Video Master HondaSUV Elder roadster's Avatar
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    Drain it once, ride around a block, drain it again ride around the block. Drain it last. Done
    Underdog: [whenever something goes wrong] I am a hero who never fails, I can't be bothered with such details.
    190K from OAM 2 mods, unconventional link to all maint.http://www.hondasuv.com/members/show...089#post480089

  7. #7
    Moderator HondaSUV Elder sgtsandman's Avatar
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    Quote Originally Posted by Gopal View Post
    I am about to change the ATF. Bought a crate of ATF-DW-1. Apparently, Honda changed the fluid name (constituents also?) from ATF-Z1 to ATF-DW-1. I hear that the new fluid can be used on old Vs and old and new are compatible and can be mixed.

    Search provides no leads on DW-1.

    Any thoughts?

    Thank you!
    Gopal
    DW-1 is too new to have much info on it as of right now but it is supposed to be backward compatible just like the new DPFII is.

    It's a personal call on your part but I would just do a single drain and fill and call it a day unless you are way over due and need to do a 3X drain and fill.

    As far as the procedure for a 3X, you just need to drive it long enough for the transmission to go through all the gears before doing #2 and #3. It would be a more complete job if you can spread it out over a few days but that would depend on the availability of time you have. One drain and fill right after another will do the job as long as you make sure you go through all the gears to make sure the new fluid has a chance to go through all the passage ways.
    Mike: Sgtsandman's 'V
    2011 Ford Ranger XLT, 4X4 5 MT


    1999 Honda CR-V EX RT4WD 5 MT



  8. #8
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    i would get it up to a high enough speed to lock up the torque converter. so for me that's usually going to work (too many kids and dogs around to go that fast around the block LOL). so i would do a drain and fill every weekend for 4 weeks.

  9. #9
    Senior Member HondaSUV Mentor
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    Thanks again!

    I last changed it @82K and it was 3x "drain-fill", with intervening drive around the block (top speed @~60mph). Now I am at 97K, just over 15K miles. I'll settle with a 1x, unless the fluid looks too dark.

    I was wondering if the Gen 1 too needs shifter-cable lube? If so, would WD-40 do the job?


    BTW, roadster, your videos are GREAT! Thank you!
    99LX, Auto, Security (65K), Valves (69, 80, 84K), HKOptimoH727 (105866K), Tint (81K), ATF (104.6K), Timing belt, Waterpump, EngineSeals, Coolant, Brakefluid, PSteeringfluid (84K) Miles: 59093 (061103), 68110 (050604), 74117(010306), 79488(072507), 84038 (061408 ), 87387 (090509), 94301(101010), 97605(031711), 104600(052212)

  10. #10
    Moderator HondaSUV Elder sgtsandman's Avatar
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    I believe the service manual calls for general purpose grease on the shifter cable but I don't have the manual on hand at the momment.
    Mike: Sgtsandman's 'V
    2011 Ford Ranger XLT, 4X4 5 MT


    1999 Honda CR-V EX RT4WD 5 MT



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