Checking Your Radiator’s Coolant Level
Keep that Engine Cool
The purpose of a car’s radiator is to cool the engine. It needs water and coolant, otherwise known as anti-freeze, to operate, and checking the coolant level once in a while is critical for optimal operation.
Note: Always remember that if you need to add coolant, never do it while the engine is hot. Wait for the engine to cool down so that you don’t risk getting burned or cracking the engine block. Also, don’t open the radiator cap while the engine is hot, either, or hot coolant may spew out.
In order to check your car’s coolant level, see if the liquid hits the “full” line on the side of the coolant reservoir. If necessary, add a 50/50 mix of water and coolant to the reservoir. Check the bottle of coolant to see if you need to add water or not as some are premixed (only add just water if you’re in an emergency). If your vehicle doesn’t have a coolant reservoir, as many older cars don’t, carefully open the radiator cap. Meanwhile, inspect the radiator’s hoses for cracks, leaks, and bulges—signs they need replacement.
If the coolant appears to be sludgy or has an oily surface, take it straight to your local mechanic. You might have an internal head-gasket leak.
