Water pump lube???

[Jim500]

Is there any problem adding a little water pump lube and anti corrosion additive to the antifreeze?

[Gryphon Rider]

The water pump bearings are sealed from the coolant.  A water pump lube won't touch the bearings until the seal fails.  Engine coolants already have corrosion inhibitors.  If your coolant is old, just drain and refill with new.

[Rio Wil]

Don't think the lube is for the bearings......supposed to lube the seal to keep it from failing....

[Jim500]

Yea it is more of a preservative for the rubber parts and a anti acid... Rollaids that's what it needs...LOL