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.
Engine Coolant. Coolant Leaks and Coolant Types. It is very important that antifreeze or engine coolant is changed every two years (four years for vehicles with long life coolant) to replenish the additives that protect the cooling system from rust, corrosion, pitting, electrolysis, gelling and foaming.our automobile cooling system should have a concentration of 50% to 70% antifreeze to water at all times. Vehicles using Extended Life antifreezes should be changed in about 50,000 miles or 4 years to prevent system damage and radiators and heater cores from plugging up.