Have you ever heard this?

[ashencrumbs]

Sirs,
I heard, just the other day, that a little oil in the cooling system is good for the water pump. Keeps it lubricated. Is this true or a good idea?
-A

[GTP Dad]

No, the coolant contains lubricants that maintain the water pump. Oil will just clog the system and cause other issues.

[auto trainy]

Boy it never ceases to amaze me,where do they get these ideas?

[bonnman]

If you have a problem in your plenum and PCV but worse case head gaskets.

[richtazz]

the bearings in the water pump are sealed, so if the coolant gets to the bearing, the seal is bad and you need a new water pump.