Anti freeze leak

[tmasterlc@xxxx]

Recently we have developed an anti freeze leak that troubles me. It 
appears to be coming from two threaded holes to the right and above 
the oil filter and starter. These holes appear to be the backside of 
head bolt holes that come into the block? This leads me to believe 
loose head bolts, bad head gasket, or even worse. Only leaks when 
cold and setting a couple of days. Does not leak when running and 
will not for 48 hrs after shutoff. But slowly the drip starts from 
the end of the threads after about 2 days. 

Anyone had this experience or have any ideas?

Ron & Cheryl
#6322