The best defenses against mold are to take away its food source, ensure adequate airflow and reduce moisture in the air. (rismedia.com)
System components include a radiator to dissipate heat, a fan or fans to ensure adequate airflow for radiator cooling, a thermostat valve that opens when the desired operating temperature is reached and a water pump (or coolant pump) to circulate coolant through the engine, hoses and other components. (cars.com)