I think it's about time I flushed out my cooling system. I've drained and refilled the system a couple of times in the 11 years & 80K miles I've owned the car, but I never used any kind of radiator flush. I understand some are harsher than others. Is there a recommended one? Do I just pour it in through the top hose connection? Can I expect to get my old hoses off without breaking the original plastic radiator to bits?

I remember reading on the old VCOA site that when you install the thermostat, the little jiggler should point in a specific direction (12 o'clock?). Is this true?

Thanks in advance!