Interesting problem. I was draining the fluid on the NP208 on my '87 Blazer. When I pulled the FILL plug (the top plug), fluid gushed out. The question is how is this possible? There are no leaks around the t-case or in the auto (it has a 700R4) to t-case adapter. Also, after draining it completely it looks about 2 or so quarts more than the 5 quarts that is supposed to be in there. Thanks for any help on this one.