Drain about half a gallon of coolant, just enough to get the level below the temp sender height. No need to drain all of it. Save what you drained and pour it back in. Quick and easy! Run the engine with the radiator cap off long enough for the thermostat to open to be sure you don't have any trapped air, and top off as necessary.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!