Water Wetter has twice the heat transfer capability when compared to 50% glycol antifreeze/coolant in water.
Proper cooling system maintenance is very critical for Lotus engines which utilize more aluminum. Aluminum has a very high corrosion potential, even higher than zinc, which is very widely used as a sacrificial anode. The only property which enables aluminum to be used in a cooling system is that it will form protective films under the proper conditions which will prevent the uncontrolled corrosive attack of acids or bases. Poor aluminum corrosion inhibition will cause the dissolution of aluminum at the heat rejection surfaces, weakening the cooling system walls and water pump casing and weakening the head gasket mating surfaces. These areas will then form deposits on the lower temperature surfaces such as in radiator tubes which have very poor heat transfer properties, causing a significant reduction in the cooling ability of the entire system. We recommend you change your cooling system yearly with a 50% glycol antifreeze/coolant mix and always use Water Wetter.