Ok so maybe I'm a fool but I don't know how to flush and clean my system and put in new coolant. Up here in Maine we finally had a nice day today (80 degrees) and I was out driviing city roads for about an hour and all of a sudden my engine was over heating BAD! All the way up to the H so I quickly pulled over and checked everything. About 5 minutes after having the car off I noticed that I had a lot of coolant leaking, whats that all about? The reserve seemed to be pretty full once I opened it. 45 mins later I drove home and it was just about the half way mark. I'm just really worried something is really messed up. Any experience with this? Also what coolant do y'all use? I want to make sure I use the best and can learn to flush it when needed. Thanks in advance!