I think by the time you see coolant in your Bypass filter it may have done damage to the engine, UOA is better at detecting a coolant leak then trying to see it with the naked eye.
If you are trying to use the Bypass as a detector of a coolant leak then I believe you will be very sorry, sort of reminds me of the guy who sqeezed a drop of oil from the dip stick, if it felt gritty then he knew the oil was dirty and changed it, of course, the dirt chewed up the bearings in the engine, sure the Bypass filter media will let you see whats in there but by the time you do see a problem...
So, using a Bypass filter to check the engine condition?
Instead of using Oil Analysis?
Suppose everything looks fine but you have a nitration problem?
Can you see high nitration by looking at a Bypass filter element?
Or high silicon count in the oil?
Silicon is pretty fine, don't believe you can see it or feel it with your fingers.
I do not believe using a Bypass filter to check for problems in engines is a good idea except for the obvious.
I think the Bypass filter set-up should be used to keep the lubricant cleaner and to help get a longer OCI out of the lubricant,
but not for checking the condition of the engine.
[ February 04, 2006, 03:47 AM: Message edited by: Bill ]