Am I being too cynical


headgaskets - this stuff won't cure it. If the headgasket has a minor water leak, this stuff might stop the leak - but if it is leaking to a cylinder it probably wont.blown
I've recently used one of the other well known brands (didn't have any K-Seal at the time) but only out of desperation! Despite replacing the usual and some unusual parts my daily was still loosing anything from 2 litres of water a week to 2 litres a day - After the headgasket change didn't cure it I gave up and stuck some stuff in the water, and it's been fine for a month so far!I would consider them to be a "get me home" rather than permenant fix.