M923 transfer case oil type

[Farmallmilitary]

I was wondering what type of oil you guys use in these transfer cases? What seems to work the best and leak the least? If i have a leak rather than put a new gasket could i put oil stop leak in it? I dont mind a little oil coming out of it, I would rather fill her up once and a while rather, than rebuild it or put a whole other one in. Thanks!

 

[GHall]

Last I looked I think it was 90 Wt.. The Tm's should have it in there somewhere. The military may have used 30 Wt (the same stuff that comes in the tranny).

 

[emr]

The trannys have 10wt, to light for the transfer , I use 5 gal pails of 80/90 with a gal of lucas dumped in, on all diffs and transfer cases .But for sure read the TM's.

 

[GHall]

My mistake..

 

[Karl kostman]

80/90 weight NON-SYNTHETIC
KK

 

[M35A2-AZ]

80/90w for me also.

 

[MarcM35A2]

Yes! 80/90! Take a look in the lubrication order LO 9-2320-272-12, Page 2!

 

[Doomsday]

I used 80/90 Lucas gear oil. Good stuff, got three 5 gal buckets from Summit Racing for under $300 shipped! Gotta love Summit!

 

[madcroc1]

$13/gallon for supertec at walmart seems to beat $300 for 3 - 5 gallon buckets.