My friend works at a ford dealership and i took my

if in 10 years of driving ur truck this is the only problem u had with ur truck thats great as to antifreeze they all start to break down with age, good maintainance would be to flush and change antifreeze every 5 years it does pick up rust and oxidation , their caustic to certain metals, chevy had a problem in 2005 equinox with their dexcool (red)antifreeze eating away the in sides of the rubber hoses causing a smell(the hoses were a different compound than normally used )if ur gasket went it was probably due to age wear and tear driving conditions environment etc if what ur your friend was saying is right its so caustic that it took 10 years to eat thru a gasket at ur intake manifold and not the water pump gasket or heater core unit