Had the same experience with my Saab 900SE. Head gasket rupture is the worst-case scenario, but luckily I avoided that and from what you described, you're probably ok. Your shop can test for that after they fix the belt (make sure they replace that doggone tensioner too, or you'll lose another one
) Loss of coolant in the block is a lot worse. You had about the best oil you could have in there for severe heat, but I would still change it after an episode like that.
