Discussions abound on the Internet forums about which kind of coolant should be used on your Esprit. Like engine and transmission oil, these discussions can spark heated, almost religious debate. Suffice it to say that you will be fine if you simply use the standard Prestone antifreeze. There's really no reason to go "exotic" with your coolant. In a large pail mix two gallons of DISTILLED water to every one gallon of Prestone coolant to get a 33% ratio. DON'T use tap water. You can add a bottle of Water-Wetter to the system for good measure. Flush and replace the coolant in your system every 12-24 months and you'll be fine.