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Transmission Fluid

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73SN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 73SN Quote  Post ReplyReply Direct Link To This Post Topic: Transmission Fluid
    Posted: March-17-2012 at 2:41pm
Just a general question or two:
I'm replacing the hoses to the cooler from the transmission.
The fluid in the transmission is fairly dark, 39 years and its probably never been changed.
Should I change it or just top it off?
Does it take plain ole Automatic Transmission Fluid?
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DrCC View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrCC Quote  Post ReplyReply Direct Link To This Post Posted: March-17-2012 at 4:29pm
I use type "A" atf.
I change fluid every two to three seasons.
Should only take slightly over two and a half quarts.
Two quart capacity for the Velvet Drive, the rest to fill fluid lines and cooler.
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73SN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 73SN Quote  Post ReplyReply Direct Link To This Post Posted: March-17-2012 at 7:40pm
Thanks,
I asked because the local transmission shop advised me not to change my Chrysler fluid/filter. They said problems ensue if you do, only after not changing regularly.
I went ahead and drained all fluid today anyway.
Is Dexron III OK to use? Wikipedia says its backward compatible.
I have Dexron II, Dexron III and something in an old-style can (yes a can) that is Type-F.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: March-17-2012 at 10:21pm
Paul,
Did you visit a automotive or a marine trans shop? If automotive, that's really a bad choice. The trans's are totally different. NEVER take their advice.

You should have a B/W velvet in the 73.

ATF stated as being "Dexron/Mercon" is the way to go - all you really need to stay away from are the so called "high mileage" fluids. They contain additives you do not want in a marine trans. The same is true for any of the automotive additives - NEVER do it.

Please fill us in and we will be happy to go from their.



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73SN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 73SN Quote  Post ReplyReply Direct Link To This Post Posted: March-17-2012 at 10:54pm
Yep, thought someone may have extra info like the car tranny folks did.
Its a Velvet-Drive trans... 1:1.
I went ahead with the Dexron III. We gotta-roll, so I had to make a decision and go with it. Hope it wasn't a bad one.
We've been down since mid-last-summer with all kinda problems.(atrophy) so cant wait any more. Gotta play soon.

Thanks
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