The 6 Properties of a Good Engine Coolant
9 Sep, 2019
Engine coolant is a fluid mixture that aids heat transfer plus ensures the optimum operating temperature of most fossil-fuel-powered engines.
Its primary function is to keep the engine at a constant safe operating temperature but also, with the addition of other chemicals called inhibitors, to control the formation of scale and rust. Inhibitors also prevent cavitation, that is, oxidation from water passing through the cooling system. Anti-freeze / Anti-Boil coolants lower the freezing point of the coolant while raising the boiling point. Corrosion inhibitors have little or no Anti-Freeze / Anti-Boil properties and are used primarily to protect surface materials in the cooling system from corrosion.
What types of Coolant?
Type A and Type B are the two main categories of coolant. Type A has an Anti-Freeze Anti-Boil package included present as Ethylene Glycol or similar, an additive package which raises the boiling point of the water and lowers the freezing point. Type B does not have an Anti-Freeze Anti-Boil additive package added and are true corrosion inhibitors only with no or little AF/AB properties. There are different formulations of both Type A and Type B. Some are not compatible.
A good coolant will provide the following:
A bad coolant will provide none of the above.
Just because a coolant is coloured doesn’t mean it’s an antifreeze anti-boil product or a corrosion inhibitor. The colour in the coolant is a dye and should never be used to distinguish the type of coolant. Many OEM manufacturers add dye in their coolant mainly to aid in the identification of brand (specific to that make) or type of coolant. Aftermarket manufacturers usually use dye to differentiate the type. Type A or Type B should be clearly labelled on the packaging. The OEM manufacturer will indicate what is suitable for the vehicle and is usually found in the owner’s service appendix.
Some coolants are not compatible with one another?
Some type A coolants are not compatible with each other. Organic Acid Technology coolants are not compatible with conventional type anti-freeze types. Also available are Hybrid types which combine the properties of OAT with conventional type and these should not be used in systems that contain conventional type A Anti-Freeze / Ant Boil coolants. So if any uncertainty is in mind the best way to make sure is that the cooling system is completely flushed and cleaned using a good quality cooling system flush before a new fill of Anti- Freeze / Anti -Boil or Corrosion Inhibitor.
Find out more about the range of high quality coolants that are available from CoolDrive below!
Jayrad Premium Cooltech Coolants
CTECH20 Jayrad Premium Cooltech Anti-Freeze / Anti-Boil Coolant
CPM20 Jayrad Premium Cool Plus Max Type B Corrosion Inhibitor
CSF20 Jayrad Premium Cooling System Flush