Thread: transmission fluid

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  1. #1 transmission fluid 
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    Can I use dexron 3 in my 2007 grand prix gt?
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  2. #2 Re: transmission fluid 
    GrandPrix Junkie Bluemagic's Avatar
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    You can but dex 6 is recommended
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  3. #3 Re: transmission fluid 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    I wouldn't because several GMs have hard shifting with Dex 3 when the vehicle calls for Dex 6. Not worth ****ing up the tranny
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  4. #4 Re: transmission fluid 
    GrandPrix Junkie The Guz's Avatar
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    Stick with the OEM recommendation.
    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  5. #5 Re: transmission fluid 
    Moderator Russosaur's Avatar
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    Didn't then 04+ years call for dex 6 anyway? If thats true then you cant use 3. I used Dex 6 in my moms 05 LaCrosse because its an overall better fluid than 3.
    2019 F150 XL - Make it run 12's N/A
    2012 F150 STX
    - Gonna be a race truck
    02 GT "Slowkar" 180k - Top Swap, Gen V, TOG Headers, 1.9s, e85, 3.25. It's literally the slowest e85 car ever....

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  6. #6 Re: transmission fluid 
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    K thanks guys I'll just wait till tomorrow and get some from the dealer
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  7. #7 Re: transmission fluid 
    Moderator Russosaur's Avatar
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    My local napa had the best price on dex 6 like 7.99/qt but I cant remember just shop around dealer might be expensive but idk
    2019 F150 XL - Make it run 12's N/A
    2012 F150 STX
    - Gonna be a race truck
    02 GT "Slowkar" 180k - Top Swap, Gen V, TOG Headers, 1.9s, e85, 3.25. It's literally the slowest e85 car ever....

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  8. #8 Re: transmission fluid 
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    I use dex/merc with a gallon of cat 30 weight gear oil laced in per Dave@TEP's reccomendation.
    But that's for racekars.
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  9. #9 Re: transmission fluid 
    GTX Level Member industrialfish's Avatar
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    Quote Originally Posted by Russosaur View Post
    Didn't then 04+ years call for dex 6 anyway? If thats true then you cant use 3. I used Dex 6 in my moms 05 LaCrosse because its an overall better fluid than 3.
    06+ specs Dex 6, 04/05 still specs Dex III
    2005 GTP - Graystone Metallic|SPO grills&spoiler/SE lip/Carbon Fiber INFERNO hood
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