Complete winterization (gas) ( parts and labor) + or- ( estimated fluids and filters).Complete Winterization-Includes freeze protection, oil and filter change, stern drive gear lube change, or inboard transmission change, fuel water separating filters, and fogging oil. Battery service, fuel treatment. Test coolant if fresh water cooled. 25-point checklist. Estimate only due to several different models - parts and oil capacity may vary. • Basic Winterization Basic Provides freeze protection for the engine and stern drive only. No fluid changes. Does include fuel filter change and fuel stabilizer. Not recommended for boats with more than 25 hours in one season.