Guys, this car is dead in the water until I get a majority vote here. I have to choose one of the following two options:

The transfer case fluid is in fact already Dextron III so using D3 in the fluid reservoir obviously isn't going to hurt the transfer case. My question then is what about the rest of the hydraulic system? Will D3 potentially hurt anything else?

Conversely, if I only use the "proper hydraulic fluid" and it is constantly leaking into the transfer case, it is then diluting/replacing the transfer case's proper fluid (DexronIII) and isn't that a potential threat to the transfer case's well being?

Which is the lessor of two evils?

Also, regarding this talk of the "later versions" having a "steel sleeve" in their transfer case, is my January '92 build date 4matic "later" enough to have the steel sleeve equipped transfer case? This might then mean that my leakage problem lies elsewhere.

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