Spicer 6+1 ESO65-7A medium duty manual

I have a 1998 International 4700 medium duty cab/chassis with a PTO driven crane on it. This has the T444e (7.3 power stroke) in it. I've done some research and there is a multitude of fluids which this transmission can take, everything from HDMO to 50wt oil.

This is an overdrive syncronized manual which weighs 500 pounds.

Here is a list of lubes I found on the Spicer/Dana website archives.

Any advice?