It is possible that the head had not been re-torqued, and the bolts relaxed enough to allow the water to seep while the truck was sitting...
just a thought
Garry K


Garry K in Pac Nor West
1948 Chevy PU 235 SM420 4 spd
1932 **** B pu
1964 Datsun 4x4 with SBC, SM465 4spd and Rockwell xfer Dana 44Fr and 12 Bolt Rr.