Thanks for the tips. I've read over the information for BioborJF -it worries me that there is no "official" recommendation from any manufacturer to use it in Hydraulic/transmission fluid although the site does have a page that suggests it works for transmission or any hydrocarbon fluid.
As stated above, I guess the recommended shock treatment would be around an ounce. That's not much.
I'm hoping I've stopped the water sources. I'm tempted to use a shock dose of the BioBorJF, run it for a week, and then replace fluid/filters one last time.
You don't actually use the diesel in the pump, just flush the system with it so it washes out all the dirt and grime. I have dumped in 5 gallons and opened all the drains to flush it out, then swabbed the inside wherever I can to remove any residual. A little diesel mixed in with 10-15 gallons of hydraulic fluid wont hurt a thing. After all it runs thru you high pressure injection pump all the time.I've read about using diesel...man that is beyond my comfort zone. Wouldn't that cause problems in the pump?
This is definitely an outdoor tractor, my wife would kill me if the tractor had cover when her car doesn't.