Engines get hot in all kinds of weather.
Engine coolants keep them from overheating. To make sure that doesn't
happen, check the coolant level in your radiator every time you check
your oil. Like your oil, coolant should at least be checked every 3,000
miles.
Open the hood and find the radiator,
which is usually very close to the front of the car. The radiator
coolant reservoir is a plastic tank near radiator, usually off to
one side. Check the owner's manual, if you can't find it.
Check to see if the coolant level is
up to the level indicated on the outside of the reservoir.
If the level is low, remove the top of
the reservoir and add coolant. A funnel might help you keep from
spilling. Make sure you read the instructions on the coolant
container. Sometimes you'll need to add water to the coolant before
you pour it in.
Very important: Don't try to remove
the radiator cap when the engine is hot. Always add coolant to the
plastic reservoir, not to the radiator itself.
Checking the Coolant 
