Winterize an outboard, I/O or inboard on the trailer. Protecting your engine from freeze damage during the winter months avoids expensive repairs in the spring. Our Engine Winterizing Kit is a convenient way for boaters to do it themselves while the boat is on the trailer. Included in the kit is a 5 gallon jug with a connecting hose and valve to control the flow of antifreeze. Complete instructions are included to walk you through the process. You will need approximately 5 gallons (per engine) of engine safe antifreeze, a garden hose, engine flusher, and a little time. Winterize your engine yourself and know it will be protected for the winter with our convenient kit. See our winterization headquarters by clicking on How to Winterize Your Boat from the West Advisor tab above. There you will find step by step tutorials on winterizing different systems as well as an abundance of information to help you make informed decisions that will keep your boats systems safe in the off season. Key Features Provides a convenient way to winterize inboards and outboards Winterization can be completed with boat on the trailer Kit includes 5 gallon jug, connecting hose (with end fittings) and regulating valve Users will need to supply a garden hose, motor flusher and antifreeze for each engine