Hey guys, my 03 zx6r has been working fine for 3 years now, ive switched out the coolant to water wetter about 9 months ago and and then over winter I had to add some glycol because a few nites over winter it dropped to about 10 farenheit and below freezing in the garage. And this is the frist time I've had the bike out in the heat, 100 plus degrees, as I was pulling into the garage the temp shot up to 247 then it just flashed HI. Fan was on, not low on coolant or oil. Any idea, Im thinking I'll flush it out and replace with engine ice and maybe replace the thermostat??