Camco Do It Yourself Boat Winterizing Kit (65501)Camcos Do It Yourself Boat Winterizer lets you increase the life expectancy of your boat's engine by investing in a winterizing kit. This winterize boat kit is a high quality gravity flow system that flushes, prepares, and protects your boat engine for winter storage and adds many seasons to its life while saving you time and money. The kit is compatible with inboard and outboard engines and requires only 5 gallons of antifreeze and your flusher (not