The coolant drain plug on the left side of the engine blends in with everything else and is difficult to see even more difficult is the task of staying dry and not spilling coolant everywhere when emptying it out from underneath the car. When you remove the plug, coolant will not flow gently out of the hole but will exit like it's being forced out of a garden hose. Have a large catch pan, and keep paper towels handy. Also, were eye protection when removing the plug.