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Thread: Trans cooler for 5 speed

  1. #1
    Registered Member 915_P5's Avatar

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    Trans cooler for 5 speed

    Has anyone done a trans cooler on a 5 speed or is it possible to do so. My mp3 when the weather is hot trans feels to be over working. Just replaced fluid about 1/2 a year ago or so. You opinions please

    MSP HEADLIGHTS, MSP DOOR SILLS, MAZDASPEED AXLE BACK, S2K ANTENNA, REAR WIPER DELETE, FRONT PLATE RELOCATOR, TEIN COILOVER/STRUT SUSPENSION, OBX HEADER 4-1 W/ FOULER TRICK, K&N DROP IN FILTER, SPORT SHIFTER BASE, FRONT LIP, DIY FOGLIGHT MOD, COMPASS/TEMP MIRROR

  2. #2
    MSP #156 PSUENGR's Avatar

    2003.5 MAZDASPEED Protegé

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    Are you tracking the car? There is no way you have an issue with normal street driving.

    That said I don't believe one exists and it likely wouldn't be easy to install any type of aftermarket one as the fluid never leaves the transmission.

    Sent from my SM-N910P using Tapatalk

  3. #3
    Registered Member 915_P5's Avatar

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    In the morning i have no issues shifts smooth, but when the car sits for hours in the hot sun shifts get hard. Get scratching in 3rd and have to really put pressure in the shifter to put into 1st and light pressure into 2nd.
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  4. #4
    Registered Member Corphish's Avatar

    83 RX-7 Gsl, 2000 Mazda Protege LX, 2011 Mazda3 Sport i

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    I know what you mean my gf's Mazda 3 seems to do that when we lived in Arizona. But when I moved more north everything went well!

  5. #5
    MSP #156 PSUENGR's Avatar

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    Perhaps you put the wrong fluid in when it was changed.

    Although I wouldn't think that would make it harder to shift when warm. Usually it's cold weather performance that you feel the difference

    Edit: or perhaps you didn't put enough fluid in. That could cause it to overheat.

    Ambient temperature shouldn't make a big difference in the operating temperature of the transmission fluid. Once it's warmed up out should remain around the same temp if your just doing normal driving

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    Last edited by PSUENGR; 06-09-2017 at 06:51 PM.

  6. #6
    Registered Member Corphish's Avatar

    83 RX-7 Gsl, 2000 Mazda Protege LX, 2011 Mazda3 Sport i

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    Her fluid was and still is the fluid from factory.

  7. #7
    Registered Member NaturalFlavored's Avatar

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    I live in Arizona where it's 100° plus everyday and I don't have a problem. I also put in Royal purple synchro mesh, had a clutch squeak changed transmissions fluid and throw out bearing stopped for a bit then came back. Got to the summer and it went away again.

  8. #8
    MSP #156 PSUENGR's Avatar

    2003.5 MAZDASPEED Protegé

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    What fluid did you put back in when you changed? It's possible that it could be the issue. I might try changing to a different brand like redline or royal prior to see if that solves your problem. Certainly a cheap thing to try...

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  9. #9
    Registered Member 915_P5's Avatar

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    Acdelco synthetic axle lubricant sae 75w-90
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  10. #10
    MSP #156 PSUENGR's Avatar

    2003.5 MAZDASPEED Protegé

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    Quote Originally Posted by 915_P5 View Post
    Acdelco synthetic axle lubricant sae 75w-90
    That's the right weight at least.

    Try one of the better fluids and see if resolves the problem. And be sure to put the correct amount in. Can't remember for sure, but I think it is basically over flowing when it is full in this car.

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  11. #11
    Registered Member 915_P5's Avatar

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    In the shop manuel says to use 75w-90 or 80w-90, you think 80w-90 would work best
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  12. #12
    Registered Member 915_P5's Avatar

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    TRANSAXLE OIL REPLACEMENT [F25M-R]
    A3U051527001W02
    1. Remove the drain plug and the washer.
    2. Drain the oil into a container.
    3. Install a new washer and the drain plug.
    Tightening torque
    40—58 N·m {4.0—6.0 kgf·m, 29—43 ft·lbf}
    4. Remove the oil level plug and the washer. Add
    the specified amount and type of oil through the
    oil level plug hole until the level reaches the
    bottom of the oil level plug hole.
    Specified oil
    Grade: API service GL-4 or GL-5
    Viscosity: SAE 75W—90 (All season) or SAE
    80W—90 (Above 10 °C {50 °F})
    Capacity (approximate quantity)
    2.68 L {2.83 US qt, 2.36 Imp qt}
    5. Install a new washer and the oil level plug.
    Tightening torque
    40—58 N·m {4.0—6.0 kgf·m, 29—43 ft·lbf}
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  13. #13
    MSP #156 PSUENGR's Avatar

    2003.5 MAZDASPEED Protegé

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    That should only affects the feel in cold weather

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  14. #14
    Registered Member 915_P5's Avatar

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    I'm going to try oem fluid and see if that works, if not may be could be the clutch or actuator.
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  15. #15
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    Take a good hard look at the clutch hydraulics - when normal fluids get warm,
    the viscosity drops (gets 'thinner') and if you have worn seals in either cylinder
    it can start slipping by them. If you have normal miles for the age of the car and
    they're still original, there's a good chance that one of them is ready for rebuild
    or replacement. Check the flex hose carefully for cracking, too. Mine failed once
    70 miles from home, luckily it was mostly interstate driving to get back. Had a
    flashback to my Kawasaki riding days for clutchless shifting...

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