Using this radiator is easy. First, make sure your vehicle's engine is cool. Then, drain the old coolant from the existing radiator. Remove the old radiator carefully and install the new Mishimoto radiator in its place. Connect all the hoses properly and refill with the right coolant. When it comes to maintenance, check the coolant level regularly, about once a month. Look for any signs of leaks around the radiator and hoses. If you notice any drops or puddles under your car, it might be a sign of a leak. Replace the coolant as recommended by your vehicle's manual. Also, keep the radiator clean by gently washing it with water to remove any dirt or debris that could block the airflow.