car coolant

How to check car engine coolant: the complete UK guide

A Green Flag technician points to the coolant reservoir under the hood of a car.
Car coolant is a mixture of antifreeze and water which helps to stop your car’s engine from overheating.

Checking your car’s coolant level is an important task to help keep your car healthy and on the road.

Our frequently asked questions, step-by step guide and expert video have everything you need to know about car coolant, how to check the level, and how to safely top it up.

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