I have a wierd coolant issue and ive read lots of other posts about cooling problems and still cant figure it out. I have a 04 busa and this year before we went to bike week in daytona i changed the oil and put engine ice in to help with the temps plus i wanted to put it in there anyway cause ive heard good things. I didnt have any time to ride it before we went because it went straight on the trailor after. When we were stuck in traffic for awhile it started to get hot and then it got really hot so i shut it off and noticed the reservoir was almost empty. Topped it back off and it slowly dropped until it got just below the low line and it seemed to stop the rest of the time we were down there and it never hit the red again. I have been riding around town for probably about a month now and never noticed it drop again nor have i had it have any overheating problems. Its been staying just a hair below the mid line. Then yesterday when we went to blessing of the bikes and i just happened to glance at it and it was completely empty again but it wasnt overheating. So today before i went riding i filled the reservoir back up and attempted to burp the system once again. Let it run for about 15 mins and it barely went above the mid line with the fans kicking on every now and then. My girlfriend was watching the reservoir the whole time i was burping it and she said it didnt move but when i shut the bike off and she looked at it again it was completely gone. So i filled the reservoir back up once again and went riding for about an hour. Didnt have any issues with it overheating and stayed in its normal place except one time i mashed it and let it unwined it jumped to mid but then quickly droped back to normal. Got home and let it idle for about 5 mins and it got about halfway between half and red so i shut it off and looked at the reservoir and it was empty again except for a little bit in the bottom. Cant figure out what is going on cause it performs fine and it doesnt blow any white smoke or smell like burning antifreeze to symbol and head gasket problem. I have a stage 1 RCC turbo system coming in about 2 weeks and i need to figure out what the problem is before i even think about installing the system. Anyone with any advice please post cause i NEED to figure out what is going on. Thanks!