I was riding through powder on my 2004 RX-1 and hit a stomp or log and I felt it in my teeth. Not long after the red coolant light came on. A long story short, I found a leak in the heat exchange where the pick scraped up against it. well I mixed up some JB WELD and I've driven over 160 miles with no more leaking, I took a $900 repair and fixed it for $11.95