I have a 5.7 357 Magnum 2012 Bravo. I'm located in a cold weather climate and I store it on a lift for the winter. In the past I've always had the marina come over each year and do the engine winterization but the marina recently closed so I'm probably going to do it myself this year. I have always winterized the water & head system myself in the past but since the engine was under warranty I wanted the let the marina do it. So I read the manual which came the re-maunufactured engine and it said the engine is a 3 point manual drain system. Remove the 3 blue plugs; 1 on the bottom port front and 2 on the starboard side in the raw water pump. It says to a. make sure boat is level b. let drain completely for a while while you do other work c. And, if you want, replace plugs and fill with anti-freeze. ( assume you do that by taking the hoses off in the upper front and pouring in fluid) I guess my question is: IS THAT IT?? It's all about the 3 blue plugs?? It also tells me to check all drain holes in outdrive to make sure they are clear.