The importance of engine coolant


Your engine is called an ‘internal combustion engine’. This means that while running there’s a lot of, well, internal combustion occurring. Thousands of explosions a minute, these create a lot of heat.

How do you stop all this heat from ruining your engine? Coolant is pumped through the cooling channels, carrying heat away from the cylinders and heads to the radiator.

The radiator cools the hot coolant as it circulates it’s way back to the engine again.

What is coolant?

It’s a mixture of chemicals to lower the freeze point and raise the boiling point.

Water freezes at 0 degrees and boils at 100 degrees. Antifreeze freezes at around -30 to -50 degrees celsius. Boiling at over 113 to 135 degrees.

So your coolant actually makes your car more versatile. Being able to withstand both higher and lower temperatures.

Why is it better to have coolant rather than just water alone?

If your engine overheats, it will cause massive damage. It can warp the cylinder heads, break down gaskets and ruin your engine and your wallet.

Given the properties of the two liquids, as seen above, you use chemical coolant as an added layer of protection. Not to mention the active chemicals in coolant reduce the corrosion inside of your engine as it is pumped around.

Do I need to replace my coolant often?

If you notice a green puddle, leaking from your car – you’ll probably need some new hoses and connectors. The level of the coolant will need to be topped up with the appropriate mixture.

Over time, or if a gasket fails and the coolant becomes dirty or contaminated, it’ll need replacing. This ensures the engine’s internals remain clean and unblocked.

Most mechanics will replace or top up, and pressure check the coolant system, during a service.

Should I use coolant stop leak?

For a small leak, like a tiny drip, yes – you can use stop leak. However if the leak is major, then it’s more advisable to send your car to an experienced mechanic.

We can easily help you sort out your coolant problems, just click here.