My coolant temp light would turn on when I idled, but if I rode around it would go away. Today I took it out to work on full throttle takeoffs and wheelies. I finally decided to go past 1st gear and went all the way to 4th before breaking down for a turn. I came out of the turn into a hill. The second I landed my Raptor stopped moving and cut off. It attempts to crank but will no longer turn over. Im hoping its something simple but assuming the worst. Also, the overflow went into the coolant tank and is noticeably darker than when I started riding today. I was using everstone coolant from walmart and I was hearing backfiring ever since I mixed 87 & 93 gas. The battery is fine.