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Type A transmission fluid
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Adamopar
Posted 2018-04-29 7:32 PM (#562489)
Subject: Type A transmission fluid


Member

Posts: 6

Hello,

I am currently looking into changing my tranny fluid in my '55 Plymouth and the manual calls for Type A fluid. Obviously this type of transmission fluid is and has been obsolete for decades now. I have heard that Dexron is the modern "replacement/equivalent" so to speak, but I don't want to risk anything before finding out if it is safe to do so. Any help would be appreciated.

Thanks,
Adam
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LD3 Greg
Posted 2018-04-29 11:29 PM (#562509 - in reply to #562489)
Subject: RE: Type A transmission fluid


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Adamopar - 2018-04-29 7:32 PM

Hello,

I am currently looking into changing my tranny fluid in my '55 Plymouth and the manual calls for Type A fluid. Obviously this type of transmission fluid is and has been obsolete for decades now. I have heard that Dexron is the modern "replacement/equivalent" so to speak, but I don't want to risk anything before finding out if it is safe to do so. Any help would be appreciated.

Thanks,
Adam


I have used Dexron in all my cars and marine transmissions that called for Type A for many years. No ill effects to date!

Greg
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57desoto
Posted 2018-04-30 5:44 AM (#562514 - in reply to #562509)
Subject: Re: Type A transmission fluid



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Location: New Castle PA
Greg is correct, of course, but you can still find Type A if you really want it. I've seen it on shelves in some of our "dollar stores" and I think it may be used in some tractors.
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mikes2nd
Posted 2018-04-30 8:39 AM (#562519 - in reply to #562489)
Subject: Re: Type A transmission fluid


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Posts: 3045
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Dexron VI for me
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Adamopar
Posted 2018-04-30 9:23 AM (#562521 - in reply to #562489)
Subject: Re: Type A transmission fluid


Member

Posts: 6

Thank you for clarifying this for me. Much appreciated!
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ram300
Posted 2018-04-30 4:13 PM (#562548 - in reply to #562489)
Subject: RE: Type A transmission fluid



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Posts: 299
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I use type F fluid, supposedly it gives a firmer shift.
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hemidenis
Posted 2018-04-30 11:15 PM (#562574 - in reply to #562489)
Subject: Re: Type A transmission fluid



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Location: Northen Virginia
the company "Shell" make the type A. Worked fantastic on my rebuild Torqueflite.
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62 413
Posted 2018-05-01 9:33 AM (#562608 - in reply to #562489)
Subject: Re: Type A transmission fluid


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Posts: 288
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Location: South Central PA
As said above,on the old stuff,Type F is is the best choice.
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Powerflite
Posted 2018-05-01 3:07 PM (#562619 - in reply to #562489)
Subject: Re: Type A transmission fluid



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Location: So. California
You're not going to risk anything with a powerflite trans. Those things are almost indestructible. They were designed to work fine with motor oil if necessary. I wouldn't stress about which type you use.
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jboymechanic
Posted 2018-05-01 4:25 PM (#562624 - in reply to #562489)
Subject: Re: Type A transmission fluid



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Location: Muskego, WI
For winter driving, my factory service manual states that you can drain a quart of transmission fluid and replace it with a quart of kerosene. I think the trans will be able to handle the newer fluids just fine.
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57chizler
Posted 2018-05-02 12:27 PM (#562676 - in reply to #562489)
Subject: RE: Type A transmission fluid



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Posts: 3036
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Location: NorCal
Two observations;

1) The new Type A isn't the same as the old type A; the old Type A was based on sperm oil...no longer available.

2) The newer Dexron/Mercon and ATF+4 fluids are formulated for use with lockup converters and, to prevent shudder, they want the lockup clutch to slip on engagement. The lockup clutch in the converter isn't any different than the bands and clutches in the transmission so the newer fluid will cause them to slip on engagement too. If that's OK with you...............
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