Product Short Description: Premix coolant which reduces cavitation in areas such as the water pump and surface cavitation in hot spots of the cylinder head. The minimisation of cavitation erosion and pitting of heat rejecting aluminium surfaces (eg. behind exhaust ports) helps to i Product Description: RXSOL REDCOOL is an ALL YEAR ROUND automotive cooling system treatment, designed to provide complete cooling system protection.Modern engine cooling systems are designed with the fluid characteristics of glycol based coolants in mind.