I checked and the overflow was full when it was new. After a day of riding with the family everything seemed fine. I took it out on a harder ride with just me I was cruising along at about 35mph on the sand highway and the temperature light started to blink. I slowed down to about 20mph and and after maybe 5 minutes or so it stopped blinking. The next day I checked the overflow and it was empty. I added distilled water to the full mark and we went for a few rides and when we came back the overflow was empty again. I haven't ever gotten the high temp indication again. We were done riding for the weekend when I saw it empty again for the second time so I haven't got to fill it and see if it would go empty again. Anybody else experience this on their new Teryx? I am hoping it was just some air in the system. Since I can't get my hood off with taking off my whole four seat cage I was just barely able to get the radiator cap off and dip my finger in it and with my pinkie I could touch coolant.