Owner Manual
Page 212
... "DO NOT OPEN HOT" on the sealing surfaces. Personal injury or engine damage may be fully tightened to prevent loss of coolant, and to insure that it is the owner's responsibility to maintain the proper level of protection against freezing according to the temperatures.... Heat causes pressure to cool an overheated engine. Please note that coolant will return to the radiator from the coolant reserve tank. NOTE: Mixing coolant types will require more frequent engine coolant changes. Never add coolant when the engine is hot or under pressure. Cooling System Pressure Cap...
... "DO NOT OPEN HOT" on the sealing surfaces. Personal injury or engine damage may be fully tightened to prevent loss of coolant, and to insure that it is the owner's responsibility to maintain the proper level of protection against freezing according to the temperatures.... Heat causes pressure to cool an overheated engine. Please note that coolant will return to the radiator from the coolant reserve tank. NOTE: Mixing coolant types will require more frequent engine coolant changes. Never add coolant when the engine is hot or under pressure. Cooling System Pressure Cap...