Tranmission Fluid for 64 DeVille
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  • 2 Post By aussiejohn
The Classic Cadillac Forum Discussion, Tranmission Fluid for 64 DeVille in Past Cadillac Vehicle Discussion; Where do I locate the dipstick for the transmission fluid and what is acceptable fluid for a 64 DeVille ?...
  1. #1
    64caddy is offline Cadillac Owners Member
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    Tranmission Fluid for 64 DeVille

    Where do I locate the dipstick for the transmission fluid and what is acceptable fluid for a 64 DeVille ?

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  3. #2
    CaddyGas's Avatar
    CaddyGas is offline Cadillac Owners Fanatic
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    Re: Tranmission Fluid for 64 DeVille

    Passenger side by the manifold. Dex/Merc, I also use it as power steering fluid. If there ever is a leak it is not as harsh as power steering fluid all atf fluid is a detergent.

  4. #3
    aussiejohn is offline Cadillac Owners Member
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    Re: Tranmission Fluid for 64 DeVille

    CaddyGas,

    I don't know that what you said is such a good idea. My 2010 Holden Cruze recommends using the same fluid in both the PS pump and auto trans, but cars of the sixties and seventies do not. While ATF will work in a PS pump, it is not designed for the old pumps and should not be used. I sell Borgeson steering boxes Down Under and they do not recommend the use of ATF in their boxes. I always use AC Delco PSF in the boxes I sell as well as those on my 1983 Holden Commodore and 1974 Corvette, which has a Borgeson integral PS box. I used to use ATF in my 1983 Commodore, which has a Saginaw pump, but it started to leak after a few years. Even a "Stop Leak" fluid I added didn't stop the leak, only slowed it a bit.

    A wiser man than me told me to use PSF, so I drained the ATF and refilled with PSF. After a month or so, the leak stopped and it hasn't leaked a drop since. And that pump is the original 1983 Saginaw pump, never been rebuilt or even pulled apart! The car has done about 400,000 km, one new engine, but original pump. Yes, ATF will work, but it will probably leak after a while. Use PSF as GM designed and you won't have any problems.

    Regards from Down Under.

    aussiejohn
    carnut and 77CDV like this.

  5. #4
    77CDV's Avatar
    77CDV is offline Cadillac Owners Master
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    Re: Tranmission Fluid for 64 DeVille

    Any ATF fluid that's compatible with Dextron will work just fine.

  6. #5
    CaddyGas's Avatar
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    Re: Tranmission Fluid for 64 DeVille

    Thanks for the tap on the shoulder aussiejohn.

  7. #6
    aussiejohn is offline Cadillac Owners Member
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    Re: Tranmission Fluid for 64 DeVille

    Quote Originally Posted by 77CDV View Post
    Any AT fluid that's compatible with Dexron will work just fine.
    That's right, just don't put it in your power steering pump.

    Regards from Down Under.

    aussiejohn

  8. #7
    70eldo's Avatar
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    Re: Tranmission Fluid for 64 DeVille

    Use DEXTRON III if you can get it. DEXTRON IV has additives that slowly eat the seals in your brake system (you'll notice the black 'clouds' in the master brake cilinder).

  9. #8
    77CDV's Avatar
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    Re: Tranmission Fluid for 64 DeVille

    Quote Originally Posted by 70eldo View Post
    Use DEXTRON III if you can get it. DEXTRON IV has additives that slowly eat the seals in your brake system (you'll notice the black 'clouds' in the master brake cilinder).
    How would trans fluid get in the brake system?

  10. #9
    70eldo's Avatar
    70eldo is offline Cadillac Owners Connoisseur
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    Re: Tranmission Fluid for 64 DeVille

    Quote Originally Posted by 77CDV View Post
    How would trans fluid get in the brake system?
    Oops sorry, disregard! I mixed up the facts! Only applicable to brake system.

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