Strongly suspect Karl is right. Many years ago, I found out that aluminum
heads had to be refaced, even when just changing a head gasket. Eventually
wound up doing a complete engine job. Antifreeze sure does a number on
moving parts. Rebuilder might have an opinion after a look at cylinder
sleeves when head is off.

Good luck, and make really sure all is well before heading offshore!

surfnturf

"Karl Denninger" wrote Yeah, it is a problem, and
probably a consequence of the coolant being in there (abnomrally high wear)
Fix the coolant problem, do a few short-interval changes, and then resample
and see if those iron numbers return to normal.