How to check your coolant levels

Any one who has lived through the frustration of an overheated car will understand the importance of coolant. In a nutshell, coolant is the radiator’s best friend, and an invaluable member of your car’s cooling system. Your radiator works to direct coolant around cylinder heads and valves to absorb heat, and keep your car running smoothly. As such, maintaining an adequate coolant level is an absolute must.


  1. Park the car on a level surface and pop the hood.
  2. Remove the radiator cap. Use a rag in order to protect yourself from burns – that radiator can get mighty hot. Best to let your car cool down first, actually.
  3. Check the coolant level. Ideally, your radiator metal should have a ‘Full’ marking etched into the side, which indicates where your coolant should sit. As long as you can visibly see the coolant level (even if it’s not reaching this ‘Full’ line), your work is done, and enjoy the peace of mind.
  4. If you cannot see it however, you’ll need to top it up. To do this, pour a 50/50 split of coolant and water (or utilize the convenience of a premixed coolant) into the opaque plastic overflow reservoir until you see the coolant rise to the ‘Full’ marking. If your car doesn’t have an overflow reservoir, simply add the coolant to the radiator.
  5. Note, do not add coolant while the engine is still warm.