English term or phrase: filed on even date herewith. French translation: depose(dÃ©posÃ©) e a Ã  la meme mÃªme date que. le present prÃ©sent document
Quick Answer. In most cases, a vehicle's coolant should be changed roughly every 24,000 to 36,000 miles. A driver may want to change his coolant more if he often drives in hot temperatures. Continue Reading.
Some sources do NOT recommend Dex-Cool or other OAT coolants for older vehicles with all-iron engines and copper/brass radiators. Others say OAT coolants can be safely used in older vehicles as long as you follow the original OEM service interval for changing the coolant (typically two to three years or 30,000 miles).