need help ASAP/Radiator? Im stupid!

[1jimmy__d]

thanks for the replies- its very helpful. I ran the water through it and then bought some radiator cleaner crap and added water to it. just drove it for like 30 minutes. the temp gauge climbed to a little more than half way up. i then let it run idle for a while to see if it made a difference, and it did not- stayed the same temperature. do you think if i run this stuff in there for the recommended 3-6 hours it will help at all? If it isnt cooling down now, what are the chances of it cooling down after i drain it and fill it back up? I got a bad feeling its the radiator. Theres a few hundred bucks (i think)! thanks again

im suppposed to go to the track on friday (first time with nitrous) i hope i can figure out for sure whats wrong and fix it before then!