Transfer case fluid - Ford Powerstroke Diesel Forum
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Old 01-27-2011, 01:51 PM
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Transfer case fluid

Okay guys i know its on here somewhere but I couldnt find it. I searched. I have a 2000 and I am changing the transfer case fluid for the first time since i bought it 12,000 miles ago. I have looked for days on here and google trying to find my answer. I didnt find it.

What fluid is the best to run in this tcase? Should I run synthetic or will syn be too slick for the clutches? Should I use mercon V, I have read that is a no no? Or should i use the new tcase fluid Ford recommeneds?
I want to use the best I don't care what it costs. Thanks in advance.
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Old 01-27-2011, 02:03 PM
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First, there are no frictions in the TC to worry about.

When I changed mine, I used regular Dex-II. I don't think it's all that critical,,,, the TC isn't subjected to what the trans is so, I'd only be worried about the seals in using something that's wrong.

No need to go overboard
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Old 01-27-2011, 02:25 PM
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Good old clean ATF...
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Old 01-27-2011, 07:17 PM
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i put half a bottle of lucas trans additive and dex atf feels sssoooo smooth!
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Old 01-27-2011, 07:19 PM
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i put amsoil synthetic atf..no need for it though..just make sure its clean atf
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Old 01-27-2011, 08:03 PM
JEL JEL is offline
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I just used the Mobil 1 synthetic ATF and it seems to work great, nice and smooth. I would recommend it simply becuase the capacity is so small that the extra cost is hardly even worth mentioning.
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Old 01-28-2011, 06:08 AM
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Quote:
Originally Posted by JEL View Post
I just used the Mobil 1 synthetic ATF and it seems to work great, nice and smooth. I would recommend it simply becuase the capacity is so small that the extra cost is hardly even worth mentioning.
This is what i want to use but I don't want screw something up by using it. A friend of mine that pulls with his trucks uses pennzoil Dextron III. My truck has 234k miles on it and wanted to give it something good in the tcase.

So pretty much as long as you use a Dextron III or equilvalent it will be good?
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Old 01-28-2011, 06:10 AM
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Originally Posted by CSIPSD View Post
Good old clean ATF...
Dextron II, Dextron III, synthetic, Mercon? There are tons of ATF out there. What is best for our transfer cases?
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Old 01-28-2011, 08:25 AM
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Owners manual calls for Mercon, but I thought that Mercon V replaced regular Mercon?
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Old 01-28-2011, 11:38 AM
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atf is atf its not your trans go to autozone pick up the mobil 1 syn multi atf with dex/merc youll be just fine, i pump merc into them all day at my shop.
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