Not that is seems that hard to do after reading the service manuals ...but for peace of mind does anyone know of a (how to) replace coolant on Gen4's like this how to? http://vfrworld.com/forums/maintenance/23276-coolant-replacement-5th-gen.html Also what is the part # of the crush washers or size that may be available at local hardware stores? LOL Having my bike since new with well over a 100k on it....peace of mind tells me replace the coolant