I have never winterized my boat, as it has always been done by the marina. I want to start the engine while it is on stands so I have purchased a set of water muffs to flush the engine. Do I have to do anything to the motor prior to firing it up other than install the muffs and turn on the water? Are there any plugs or anything that I need to worry about or will the pink stuff just flush out when I start the engine? Thanks in advance for your advice.