Names can be ambiguous. ‘Fun Run’ is one particular term that I think falls against everything that the Trade Descriptions Act stands for and, during the rare times that I spend away from my beloved workshop, it is one such activity that I strive to avoid at all costs. ‘Antifreeze’ is another name that is also misleading. While the designation hints at its most obvious property, many owners are fooled into thinking that, provided enough antifreeze resides within their engine’s cooling system, it is protected for evermore.
They are wrong. Antifreeze has several other qualities, one of which prevents corrosion from developing inside the motor’s various passages, through which the coolant is pumped to dissipate heat. If corrosion starts, it can constrict the channels, in a similar way to cholesterol causing eventual arterial blockages in humans, and the risk of the engine either overheating or suffering from cylinder head gasket failure increases dramatically.
Sadly, antifreeze’s anti-corrosion properties diminish with time and it is wise to request that your garage flushes and replenishes the cooling system at a next service, or prior to the autumn setting in, should you be unsure of when it was last done. Most cars need this doing between two to five years.