Engine/Transmission (1994 - 1998) Transfer case oil

[SRehberg]

What's everyone running in their transfer cases for lube? I know D/C calls for ATF+4. I use to always use Dexron III. Anything better?

 

[Signal73]

I have always used regular dino oil Dextron III/Mercon I believe? alwways comes out looking how it went in I do 20K mile changes on it. Probably overkill but the stuff is cheap.

 

[SRehberg]

I like to change my fluids frequently; overkill, perhaps, but it's cheaper than the equipment I'm trying to protect. Thanks for the reply on the Dexron III.

 

[CumminsPower98]

I have run Amsoil Series 3000 HDD 5w30 for probably about 170K+ with no problems. My next change I will put the new Amsoil MTF in that's also a 5w30 made for the NV5600. I feel the heavier lube provides a little better protection. Don't go too heavy though or the oil pump will not work.

 

[kentdiesel]

I use Mobile 1 synthetic Dexron ATF in the transfer case.

Kent

 

[SRehberg]

I appreciate the replies on what you have used. I had thought about heavier oil until the oil pump issue came up. I hadn't realized how small the pickup tube was in there. Mobil 1 seems to be a popular lube along with Amsoil. What does the MTF with the Amsoil mean? Thanks

 

[B KIRK]

I use Amsoil 75-90 gear fluid.

Been running it since new.

There is a pump in these T-cases, but with a synthetic, works great.

Took it apart at 85K miles when I installed my DTT transmission.

Had it out, and figured why not check it for wear.

That was a waste of time. Was clean as new inside.

Even the magnet wasn't worth cleaning off.

Put some more of the same fluid back in.



Brad

 

[SRehberg]

That says it all when you tear them down and the wear is not even visible. The magnet would have been proof enough w/o much debris. Sounds like synthetics are able to flow through the small pickup without issue.