To improve cooling without increasing aerodynamic drag, Evans Cooling components have been fitted. Central to this is 100-percent Evans NPG coolant, which is not water-based, boils at a toasty 370 degrees, and requires only a 4- to 7-pound radiator cap. This reduces the risk of a blown hose and subsequent accident. Best of all, high coolant temperatures are usable, and the threat of steam pockets is reduced because no local boiling takes place. Another advantage is the hotter coolant more efficiently transfers heat via the radiator, allowing a smaller radiator for a given amount of cooling.