Abstract: A system for mixing bulk windshield washer liquid for both cold and warm climates utilizing a pair of mixers and means for selectively actuating these mixers. A high concentrate educator is used to mix the warm weather mixture and a high volume eductor is used to mix the cold weather mixture. A three way water valve is used to direct water to the high concentrate eductor and to the high volume eductor. A float valve is used to maintain an essentially constant level of windshield washer liquid within the system. Detergent and alcohol are drawn from their respective storage containers solely in response to fluid flow through the eductors, thereby eliminating the need for electrical pumps or metering equipment.