We recommend to put in the manufacturer’s recommended type of coolant that is the best for your engine and radiator metal types. There are several types of coolant which you can find in both concentrated (needs to be mixed with the proper ratio of water) and pre-mixed form. The most common type of coolant is made of Ethylene Glycol, but there are also other types such as Organic or Carboxylate Technology.
Don’t get confused with the colors of coolant either; just because the coolant is the same color does not mean it is the same type. It is important not to mix different types of coolant. If you are topping off coolant, be sure to make sure you are putting in the same kind, otherwise a full flush and refill is the way to go. In order to eliminate water quality issues and ratio mixture mistakes, we only used pre-mixed coolant.