I was in the local NAPA, and saw a display for "BlueDevil Engine & Cooling
Sealant". They want $59.95 for a 32 oz bottle.

Has anyone tried this? Does it work? Sure, I know the proper way to fix a
head leak is blah blah blah. ;)

It's much more expensive than the Bar's Leak Head Gasket repair, which is
around $10 I think. I know folks have had some good luck with teh Bar's
Leak stuff. But, it does require you to flush the system.

Jon