i payed around $50 for the special locking tool for the hose clamps... nearly worth its weight in gold :lol:
just use the regular prestone green stuff and use only distilled water (if you didn't already...). it transfers heat much much better as it is 'wetter'. seems like you need a good flush. that prestone super rad flush stuff worked good for me. the water was really really brown! then i drained and filled with hose water, ran it again, and then drained that. the water came out nearly clear, and then i just drained and backflushed it a bit, making sure to get as much out as possible, then filled and everything was cool. i get soooo much heat out of my car now its amazing.
you must get the car up to temperature for the flushing agents to do their jobs properly... i'd say a good 30 mins of idling or even take a rip around the block (i didnt though, as putting the power steering pump on is a PITA). winter flushing sucks if you're doing it outside though. as stated above, with a good thermostat the rad barely gets any flow. you could always install a weak thermostat though just for flushing purposes...