Drive safely through all weather with nextzett Anti Frost Windshield Washer Fluid Concentrate! This de-icer prevents re-icing and removes bug splatter and road grime, providing glare-free, smear-free vision to get you safely to your destination. Plus, it's free of toxic methanol and provides superior protection in cold temperatures. Are you ready to experience exceptional winter driving? Anti Frost can be used year-round and is compatible with nextzett's warm weather concentrated windshield washer fluid, Kristall Klar Windshield Washer Fluid. 1 liter Anti-Frost (Pure) = -76 F (-60 C) 1 liter Anti-Frost + 1 liter water = 2 liters (.50 gallons): -6 F (-21 C) 1 liter Anti-Frost + 2 liters water = 3 liters (.80 gallons): 14 F (-10 C) 1 liter Anti-Frost + 3 liters water = 4 liters (1 gallon): 20 F (-7 C)