To the guy who posted an answer to my post about losing coolant, who said the gasket between the block and the intake manifold was the culprit and which had to be replaced periodically:
I have also "learned" that differential movement (caused by heat-up/cool-down cycles) between the manifold and the block causes abrading or wearing of the gasket, which in turn, leads to leaks. In your experience, are there some gasket brands that resist this abrasion or which are immune to it? Also, are there any special steps during replacement of the manifold gasket to prolong its life, say until the engine needs a rebuild?