Coolant, also called antifreeze, keeps your engine from overheating in summer and freezing in winter. It’s one of those fluids that’s easy to forget about until it causes a bigger problem.
What Coolant Actually Does
Coolant circulates through your engine, absorbing heat and carrying it to the radiator to be released. It also contains additives that prevent corrosion inside the cooling system and lower the freezing point so it doesn’t turn to ice in a Canadian winter.
Why It Breaks Down Over Time
The corrosion-fighting additives in coolant get used up over time, even if the fluid level stays topped up. Old coolant can allow rust and corrosion to build up inside the engine and radiator, which is a much more expensive problem than a fluid change.
Signs It Needs Attention
- Coolant looks rusty brown instead of its usual bright colour
- Your temperature gauge runs higher than normal
- You notice a sweet smell, which can mean a small leak
- It’s simply been a few years since the last flush
How Often to Change It
Most manufacturers recommend a coolant flush every two to five years depending on the type of coolant your vehicle uses. Check your owner’s manual for the exact interval.
Not sure when your coolant was last changed? President Tire & Wheels can check it and top up or flush it as needed.
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