On Sun, 22 Mar 2009 12:43:04 -0500, Steve Barker
wrote:

Joe wrote:
On Mar 21, 10:10 pm, Steve Barker
wrote:

snip

well using your line of reasoning, water is a lubricant also. It
lubricates water pumps and water pump seals just fine.

Assuming that is in an automotive system, there must be either an
additive (ask the NASCAR folks) or ethylene glycol (antifreeze)
present.

Joe

it's not an absolute requirement . And what the HELL does NASCAR have to
do with it?
They run without ethelene glycol coolant so in case of a crash they
don't have it all over the track. A water pump lubricant is REQUIRED
if antifreeze is not in the system. This is mostly to protect the
SEALS as today's water pump bearings use sealed lifetime lubricated
bearings.