Coolant level check

How do I check my cars coolant level?

Warning, only top-up your engine’s coolant when it is cold. Undoing the filler cap when the engine is hot could cause serious scalding. If you are unsure, please bring the car to us.

Locate the engine coolant reservoir. Your car owner’s manual will show you where. It is usually a transparent tank with the coolant visible through it. Check that the level is between the Min and Max marks, this is easier to see if you use a torch to shine a light into it. If below the Min mark you will need to add extra fluid.

Never undo the engine coolant filler cap while the engine is hot as the fluid will be under high pressure. Fill the reservoir to the Max mark and replace the cap. Never add cold water to an overheated engine, you must let it cool down first. Do not overfill or the system as it will blow the excess out when it warms up.

Engine coolant helps remove excess heat from your car’s engine by using a mixture of water and antifreeze. If coolant levels are too low your car’s engine can overheat causing it serious damage.

If you are unsure how to check your coolant or the correct coolant/water mix, please call in to the garage and we can help.


If you need help, please call into the garage in Sharpthorne. We are based just outside of East Grinstead in West Sussex and very near to Crawley and Gatwick.

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Sharpthorne Village Garage