Hello everyone, I bought a Supra boat this summer and I'm really happy. It is a Comp 1990. Winter is comming here and I am looking for the right way to winterised the engine. Engine is the stock Ford 351 windsor PCM. The carb is a newer 650 Holley. I do not have the owner manual for it. So it's my first inboard boat. I want to make sure that the cold weather will not damage the engine. So if you have the right procedure to refer me I will be very happy