Larry Jaques wrote:

(...)

The one I installed had a ~1 quart glass filter chamber with a
radiator type drain valve on the bottom. You could see the water
collect in the clear chamber and just opened the valve to release it.
Fuel went into the chamber, water dropped out (immiscible), and a fine
filter above it sent dry fuel to the engine. Similar to this
http://goo.gl/8mJWE I think his was about $100.

Cool! Thanks.

Sounds like the perfect thing to put at the bottom of
the hydraulic system on Karl's tractor. Opening the
valve every 100 miles has got to be less trouble than
draining and heating the oil.

--Winston