Thread: Disappearing Trans Fluid

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  1. #1 Disappearing Trans Fluid 
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    Hello,
    I just recently started having my car ('05 GT/105K) shift a little rougher in lower gears, usually only first to second. I checked my fluid level and saw that it was a little low. Once I added fluid the problem went away. A day later and the problem returned, checked fluid, a little low, added fluid, problem went away, no spots on driveway. Same thing happened the next day. No evidence of a leak anywhere. I have had to put in about 2 quarts over the last week or so to keep it running smooth. Everywhere I park there are no stains and the trans is dry on all external areas.

    Anyone else experience this or know what may be causing it?

    Thanks for any help,
    Tom
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  2. #2 Re: Disappearing Trans Fluid 
    Moderator dsmuts's Avatar
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    crawl under the car and look for wet spots.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  3. #3 Re: Disappearing Trans Fluid 
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    No wet spots...completely dry.
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  4. #4 Re: Disappearing Trans Fluid 
    Moderator dsmuts's Avatar
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    maybe your rad leaking trans fluid into the coolant but that's unlikely.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  5. #5 Re: Disappearing Trans Fluid 
    Killa Bee Scottydoggs's Avatar
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    check your radiator for the fluid to be in the coolant. the coolers break inside the rad.

    if this is the case, stop driving it, as if coolant gets back into the trans its over johnny.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  6. #6 Re: Disappearing Trans Fluid 
    GTP Level Member Rico's Avatar
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    It may be only leaking when you're driving down the road. I would suspect cooling line seals at the transmission or input shaft seals.
    It's a CUMMINS Dodge not a Dodge Cummins
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  7. #7  
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    Quote Originally Posted by scottydoggs View Post
    check your radiator for the fluid to be in the coolant. the coolers break inside the rad.

    if this is the case, stop driving it, as if coolant gets back into the trans its over johnny.
    Bingo, exactly what i am thinking.

    This post brought to you by.....
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  8. #8 Re: Disappearing Trans Fluid 
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    Quote Originally Posted by scottydoggs View Post
    check your radiator for the fluid to be in the coolant. the coolers break inside the rad.

    if this is the case, stop driving it, as if coolant gets back into the trans its over johnny.
    If this is this case, what would be the best course of action?
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  9. #9 Re: Disappearing Trans Fluid 
    Moderator dsmuts's Avatar
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    Swap the radiator, change trans fluid and filter, flush coolant
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  10. #10 Re: Disappearing Trans Fluid 
    Killa Bee Scottydoggs's Avatar
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    ^^^what he said.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  11. #11 Re: Disappearing Trans Fluid 
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    Quote Originally Posted by dsmuts View Post
    Swap the radiator, change trans fluid and filter, flush coolant
    Quote Originally Posted by scottydoggs View Post
    ^^^what he said.
    Thanks for the help guys...much appreciated!!!
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