The 1947 - Present Chevrolet & GMC Truck Message Board Network

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- The 1973 - 1991 Blazers, Jimmys, and Suburbans Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=37)

- - 1991 Suburban Transfer case question (https://67-72chevytrucks.com/vboard/showthread.php?t=88450)

bad71gmc

02-01-2004 08:28 PM

1991 Suburban Transfer case question

I have a 1991 Suburban and was wondering what type of fluid the transfer case uses.
It look like it is ATF fluid, Is that right??
Thanks

Grim Reaper

02-01-2004 10:37 PM

ATF

91 ran a NP241 I beileve and there is a SYE available for it.

bad71gmc

02-14-2004 11:03 AM

Grim Reaper,
What exactly is a SYE that you were refering to??
Thanks

red450ih

02-18-2004 05:16 PM

Alot of rebuilders recomend using 5W30 full synthetic engine oil in the Tcase. It came with Dextron III from GM.

Keith

Grim Reaper

02-19-2004 01:07 PM

Quote:

Originally posted by bad71gmc
Grim Reaper,
What exactly is a SYE that you were refering to??
Thanks

Slip Yoke Eliminator.

Most hard core 4x4 ers want fixed yokes so that it you pretzle a drive shaft the fluid doesn come out. Also slip yokes only have some much travel. With a fixed yoked you can get a long spline drive shaft that wil alow for up to 24 inches of change. Also with a fixed yoke you can run a large CV joint to dealwith any angle issues from lifts.

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