Im in Florida, where the temps are now getting to be in the 90's on a daily basis. The last couple of days my bike overheats in traffic, the temp guage reaches 250 F and the overflow tank starts spitting out coolant. I just recently changed the coolant in it and the fans are kicking on at 220 like they should. I have checked the system on a couple occasions to make sure there is no air in the radiator. But because of the horrible traffic around here, I guess I am not getting enough cool air to the engine...My question is there an additive I can safely use to lower the temps?