I've freakin googled this to death. everybody says something different. What kind of coolant/antifreeze do i need for my 99 yz400f? The stuff thats in there is green thats all i know. Will regular old autozone green coolant work? do i mix it 50/50 with water or not? TALK TO ME LIKE IM AN IDIOT, AND TELL ME EXACTLY WHAT TO DO LOL. I wanna flush the coolant before summer hits. Thank you!