Valvoline Zerex 4 Gallons Antifreeze Coolant Blue G48 Prediluted 4 x 1 Gallon | eBay
11 Coolants. 22 What is Coolant? Coolant is a mixture of: 1. Water (50%) 2. Freeze depressant (Usually ethylene glycol- about 93%) 3. Corrosion inhibitors. - ppt download