Radiator Cap , What Are You Useing?

Just wondering what fan or fan/clutch setup you have on it, How close is your fan shroud on it to your fan, and how old is your system? Have you ever flushed the rust/corrosion out of it? Right sized pulleys, fan blades facing the right way, or correct water pump installed. and last but not least, is it turning the right way?

One other thing, are you useing the factory gage on the dash, or some other way to measure the exact tempature

Have you pressure tested the cooling system and cap? Air bubbles in the radiator when running, and warmed up? Overflow tank installed?

What changes have you made recently, or since last summer (when it wasn't running hot?)

Just a couple of questions to respond to before we can try to answer your question easier.