Overheating at highway speed is a sign that you're either not getting enough air flow...like electric fans blocking the radiator...or the radiator is too small. Another possibility is that someone accidentally used 100% antifreeze instead of 50/50


70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"