One of the most important things you should check for in your car is your engine coolant. Low coolant levels will cause your engine to overheat, causing even more problems for your car.
In the picture above, the level of the coolant should be between the full and low marks. If the amount is lower, then fill it up until it reaches the required level. Have your car checked if you have to fill up your coolant tank often, as there might be a leak or some other problem in the engine. It’s important to NEVER open your coolant overflow tank or your radiator when the engine is running or is still hot. Put the coolant into the tank when the engine is off and cool already.