Transmission lines wet

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by earnies2, Jun 16, 2021.

  1. earnies2

    earnies2 Medium Load Member

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    The other day I noticed my transmission cooling lines are wet not leaking but wet. So I need to change them.
    I was wondering if adding a second cooler like the one behind the cab on the frame on Freightliners would help?
    I belive u have the cooler. So I would come out of the trany to the cooler behind the cab then to the cooler in front of the radiator then back to the transmission. It would only cost me the extra lines and fittings.
    Would it be worth it?
     
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  3. lester

    lester Road Train Member

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    Is your tranny running that warm that you think you need another cooler?
     
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  4. earnies2

    earnies2 Medium Load Member

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    No its not running hot just thinking that cooler would be better...
     
  5. Mike250rs

    Mike250rs Medium Load Member

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    If its staying at temp.. why add more places for things to leak later?
     
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  6. lester

    lester Road Train Member

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    I wouldn't add a cooler than
     
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  7. earnies2

    earnies2 Medium Load Member

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    Just thinking that if it was to run cooler it would benefit the trany and longevity.
     
  8. Roger McG

    Roger McG Light Load Member

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    Gotta remember 1 thing if the oem thought it needed a second cooler they would have added 1 from the factory. By the time you go to the back to go to the front you add capacity to the lube system.
     
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  9. Catmando

    Catmando Light Load Member

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    If it ain't broke...Don't fix it
     
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  10. AModelCat

    AModelCat Road Train Member

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    There's really nothing inside a typical manual/automated manual transmission that would really see any benefit from a slight reduction in oil temperature. Its all gears and bearings. I don't think you'd see a gain in life from the range synchro either.

    Now if we're talking an Alison automatic then a little extra cooling capacity wouldn't be terrible. Those are true autos with torque converters and clutch groups. They don't care much for high heat.
     
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  11. earnies2

    earnies2 Medium Load Member

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    Added capacity is good just like a bypass filter adds capacity. Do you think a second cooler will will double the BTU's of the trany cooler cooling?
     
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