The Spoon Sports radiator cap functions to increase the pressure inside the radiator; the laws of physics then apply accordingly, even when the temperature of the coolant water exceeds 100°C, boiling can be avoided so gas bubbles and subsequent hot spots are avoided and increased cooling performance may be achieved.
Notice:
STD 1.1 increased to 1.35kgf/cm2
Type D is suitable for most factory radiators
Type F is suitable for most aftermarket radiators