if you're looking at the radiator, it's on the bottom right... all you have to do is turn the drain plug, and it should release the coolant. here's a picture i took awhile ago, when mine was busted (as you can obviously see)
hope that helps!
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2012 Hyundai Veloster - new 40 MPG DD!!
1990 Nissan 300ZX Twin Turbo 5 speed - "Zeus"
2005 Nissan Titan SE King Cab 4x4 - gas guzzler