Look on the driver's side up over the cross member. Use a bright lite. It's plastic. Turn and pull gently. I turned and pulled hard and it came completely out. Take a pc. of fuel line, 3/8, I think and hook it up to the drain 'port'. Doesn't go everywhere that way. As others have said. Drain the over flow bottle before taking the rad. cap off. then take the thermostat cover off and drain the rest. Pour some distilled water in till it runs clear then you know all of the old stuff is out. Have 'fun'.