The drain is on the bottom passenger side of the radiator. There is a peacock just above it that you will not be able to see unless you remove the front bumper/grill assemble as I had to. The peacock must br turned to the vertices (up and down) position and then pulled out of its seated position. It will move about .5-.75 inches and then the drain will flow. Remove the cap to increase flow once the peacock is pulled. After draining push the valve back in and return to the horizontal position. Not sure if any of this can be accomplished without removing the bumper so save yourself the frustration and spend 20 minutes removing it.