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Old 10-11-2010, 04:42 PM   #1
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Transfer case fluid

I have a 2000 sahara, i have a leak in my transmission somewhere, but the dip stick shows the same level for months, does the transfer case have it's own fluid, or is it all the same, and how do you check the fluid level (if it's seperate) on the transfer case??

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Old 10-11-2010, 04:53 PM   #2
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The transfer case is lubed by ATF which is kept separate from the transmission. The transfer case fluid is checked via removing a bolt on the back side of the transfer case, next to where the driveshaft connects to it. You'll see two bolts... the lower drain hole bolt and the upper fill hole bolt. Remove that upper bolt and the fluid is supposed to be up to the bottom of that hole. You stick your finger in through the hole to check the ATF level.
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Old 10-11-2010, 09:36 PM   #3
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about how often should you change the ATF in the transfer case? Any one better than another?
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Old 10-12-2010, 09:56 PM   #4
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about how often should you change the ATF in the transfer case? Any one better than another?
If it's an NP231 or NP242, I would not use ATF at all. My research uncovered extended use of 10w30 or 10w40 synthetic engine oil as far suprerior due to well known "misting" problems of ATF in those units. I've used 10w30 M1 for a few years in both TC and 6sp. transmission and the performance is far superior to ATF in every respect.
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Old 10-13-2010, 10:25 AM   #5
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If it's an NP231 or NP242, I would not use ATF at all. My research uncovered extended use of 10w30 or 10w40 synthetic engine oil as far suprerior due to well known "misting" problems of ATF in those units. I've used 10w30 M1 for a few years in both TC and 6sp. transmission and the performance is far superior to ATF in every respect.
Care to elaborate on this research? My t-case's have been pretty healthy on atf for a long time.
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Old 10-13-2010, 10:56 AM   #6
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Quote:
Originally Posted by JD Adams View Post
If it's an NP231 or NP242, I would not use ATF at all. My research uncovered extended use of 10w30 or 10w40 synthetic engine oil as far suprerior due to well known "misting" problems of ATF in those units. I've used 10w30 M1 for a few years in both TC and 6sp. transmission and the performance is far superior to ATF in every respect.
Gear driven transfer cases like the 300 and Atlas II requires gear lube but the chain-driven 231 and 242 do both indeed require ATF. Right from New Venture and New Process.

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