• Replace coolant products at the intervals advised by the product supplier irrespective of appearance.
  • Flush the system if it appears contaminated or if scale build-up is noticed. It is good to always flush a cooling system with a quality alkaline based flushing product when changing the coolant, and use clean, soft or de-mineralized water during refilling.
  • Be sure that correct mixture ratios are kept when topping up. Failure to do so can enhance corrosion due to either under or over-treatment.
  • Turn the heater control on when draining, flushing or filling a system.
  • Periodically inspect check radiator hoses and radiator cap. If hoses appear expanded, feel very soft, or if you can feel them crunching when squeezed, replace them.
  • Use only products that are recognized to meet the requirements of the manufacturer, If a product does not clearly state that it meets the appropriate part of this standard do not go for it.
  • Periodically check the external fins of the radiator core. The fins and the core tubes corrode because of external contamination, leading to reduced heat transfer efficiency and possible leakage. Replace if required.
  • Never take out a thermostat from a cooling system to reduce the operating temperature. This practice can result in catastrophic problems. If the engine is running hot, identify and rectify the source of the problem.
  • DO not mix inhibitor or AF/AB products. Always drain the systems and flush completely if switching to a different brand.
  • Always take particular care to ensure that all earthing points are connected, clean and making contact. This is particularly important when a vehicle is fitted with an aluminium radiator core. Failure to take this warning can allow the coolant to become a conductor of current that will lead to destruction of the radiator core.