Any one have a preference on transfer case oil? This will be the first time changing it. I know on the motor oil only use 4 qts. Whats the recommended level for the case?

Bog standard Hypoid gear oil EP80. Add it through the big hole until it comes out of the little hole.

07Silverado wrote:
[quote]Any one have a preference on transfer case oil? This will be the first time changing it. I know on the motor oil only use 4 qts. Whats the recommended level for the case?[/quo

SAny one have a preference on transfer case oil? This will be the first time changing it. I know on the motor oil only use 4 qts. Whats the recommended level for the case?[/quo

Silverado,I use amsoil 75-90 manual transmission & transaxle gear lube API-GL-4.
Level the bike up, pour in the big hole until it comes out the little hole 13.5 ounces.

Drifter brought over some 75w-90 Gl-4/Gl-5 Royal Purple when we did ours.
The silver dollar size cap on the side of the transfer case with the slot, is where the replacement oil goes in(the fill hole). The allen head screw right below that cap is the over flow..ie, when the bike is sitting upright such as on a lift, or if someones is holding the bike upright(ie not on the kick stand), the oil will start to trickle out of that hole when its full(the check hole). The drain plug(the drain hole), is on the underneath side of the Transfer case cover, and further back by just a bit from the other two, and has a 13mm? head on it, with a copper crush washer. You'll see it when you look under there.
Don't fill it all the way up to the bottom of the "fill hole", just to the bottom edge of the "check hole". The manual states .4 liters of oil, and that is exactly what it holds. Any more just runs out.
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I did mine a couple weeks ago used Royal Purple. As stated on the fill.