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Unread 08-25-2013, 09:27 PM   #16
cjohnson2209
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1980 CJ7 
 
Join Date: Jul 2012
Location: Olive Branch, Mississippi
Posts: 14
Also, I am pretty sure it has a Dana 300 t-case based on the pattern: 4low in front and N, 2high, 4high in the back. Does that make sense? Does that make a difference in fluid type or amount?

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Unread 08-25-2013, 10:29 PM   #17
cardiffclimber
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1981 CJ7 
 
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I initially went with 90W gear oil when I first swapped a T5 in my '81 because that's what I always thought went in a manual transmission. It worked okay, but shifting was not the best.

When I went to change the oil, I read in a manual for an '84 that came with a T5 that the recommended fluid is ATF.

I tried it, and shifting improved considerably.
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Unread 08-26-2013, 09:15 AM   #18
LumpyGrits
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Quote:
Originally Posted by cardiffclimber View Post
If it is a T4, you want to use ATF.
NOPE-------That's what AMC did against BW's recommendation. They replaced allot of trannys.
Use the 75W-90 syn. It works.
LG
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Unread 08-26-2013, 09:17 AM   #19
LumpyGrits
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Quote:
Originally Posted by cjohnson2209 View Post
Also, I am pretty sure it has a Dana 300 t-case based on the pattern: 4low in front and N, 2high, 4high in the back. Does that make sense? Does that make a difference in fluid type or amount?
Use std gear oil 85W-90.
LG
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Unread 08-26-2013, 12:16 PM   #20
wkp
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1980 CJ7 
 
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After much research ( on this site and others ) , I ended up using NAPA GL4 (part number # SL24239 ) in my SR4 which is basically the same as the T4. Its been in for several years with no problems. Supposedly safe for the brass/bronze parts.
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Unread 08-27-2013, 08:52 PM   #21
cardiffclimber
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Quote:
Originally Posted by LumpyGrits

NOPE-------That's what AMC did against BW's recommendation. They replaced allot of trannys.
Use the 75W-90 syn. It works.
LG
Um... I wish I would have known that. Thanks for the info, I'll put that on the top of my list of things to do.
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