I'd bet 2 to 1 that you have a simple water leak.. A small drip now and again that you have not bothered to find!!!
A cracked head ir a leaky head gasket will ALWAYS show itself by purging the coolant system from COMPRESSION entering into the coolant system...
YOU HAVE A SIMPLE COOLANT LEAK!! Look closely and FIND IT!
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />


professional bovine relocation specialist