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Trasfer case help ?

JDELBLAZ

1/2 ton status
Joined
Feb 17, 2000
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STAMFORD C.T
i have a 89 blazer with manual hubs a 700 r4 trani do i have a 208 or 241 tcase i want to chage the oil in it i called 2 dealers and one told ne use atf oil and the other said gear oil looked in my manual it said conventional tcase use gear oil automatic hub tcase use atf!
now here is the confusing part i have manual hubs but when i drain the oil it looks and smells like burned atf what should i put in this tcase
 
you have an np241.

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http://fourbyfour.coloradok5.com
 
Your '89 has an NP241 case. For either chain drive case, NP208 or NP241, use ATF. Do not put gear oil in there.

Tim

1970 Blazer CST 4X4 350 SM465 NP205
1987 Suburban 4X4 350
1988 Chevy Pickup 4X4 350
 
Definitely ATF. I know first hand because I have already rebuilt my t-case thinking it was the culprit of my leak. What the real problem was (for everyone's info. and for future reference) was the green seal at the back of the t-case where the yoke slides in had worn a groove around the yoke allowing the fluid to seep out and of course spray all over the undercarriage of my truck while driving down the road. I replaced the seal and the yoke and all is well.

Chevy's RULE!
 
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