How to make sure your vehicle is ready for hot summer driving:
Check the level and strength of the coolant. A low coolant level may allow your engine to overheat. Make sure the coolant reservoir is filled to the proper level. NEVER open a radiator cap on a hot radiator to check the coolant level! Hot steam and boiling coolant may spray out a burn you! Wait until the engine has cooled to check the level inside the radiator (this should not even be necessary if the coolant level in the reservoir is maintained). If low, add a 50/50 mixture of the specified coolant and water. NEVER run straight water in the radiator. Water does cool better than antifreeze, but antifreeze is required to raise the boiling temperature of the coolant and to protect against corrosion.