I changed it and think I had it too full.... it boiled over again and then the cap would not tighten. Cap number 2 with proper level seems, SEEMS to have corrected. I think it had the wrong cap or a bad cap prior. Verified cooling fan runs at the proper temps, etc... lets hope for the best. Any one ...

I have new timing belt, water pump, thermostat, bottle. Drives fine, Guage stays halfway almost exactly. When I turn car off, it immediately starts to boil over and lose all coolant. I drive with scanner hooked up, cycles between 207 and 220, never exceeding. Same Temps at idle. I never hear fan ...