Doc - I don't remember Chevrolet using either the oil or water; this was simply a comment on governors in general. The water units I have seen were monster units with huge springs, used on some pumper trucks of the 1920's.

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop