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I wish they did still use the radiator drain cox on them. However, they want you/us to take the lower hose off the radiator.
Draining and Filling Cooling System
Draining Procedure Caution: To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.
Filling Procedure Notice: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.
Important: Use a 50/50 mixture of DEX-COOL antifreeze and clean, drinkable water.