Boat, Jetski, Seadoo, and PWC winterization in Commerce Township, MI

Complete winterization services for boats, jetskis, seadoos & PWCs

We provide comprehensive winterization services following manufacturer specifications for boats, jetskis, seadoos, and PWCs of most makes and model years. Our meticulous process protects your engine, fuel system, hull, and all critical components from Michigan's freeze-thaw cycles. Every step is documented to ensure warranty compliance and give you complete peace of mind throughout the off-season.

Engine fogging

We fog your engine's internal components with protective lubricant that coats cylinder walls, pistons, and valves. This prevents rust and corrosion from forming on metal surfaces during the months of inactivity. Fogging is essential for both two-stroke and four-stroke engines, creating a moisture barrier that keeps internal engine parts in pristine condition until spring startup.

Fuel system stabilization

Your fuel system receives complete protection against degradation and phase separation. We add marine-grade fuel stabilizer to prevent gasoline from breaking down, forming varnish deposits, or separating into layers that can damage carburetors and fuel injectors. We run the engine to circulate stabilizer throughout the entire fuel system, ensuring every component from tank to carburetor is protected.

Cooling system drainage and antifreeze protection

All water is completely drained from your engine's cooling system to prevent freeze damage. For inboard and sterndrive engines, we add marine-grade antifreeze to the cooling system. For outboards and PWCs, we ensure all water passages are thoroughly drained and dried. This critical step prevents cracked engine blocks, damaged heat exchangers, and destroyed water pumps—repairs that can cost thousands of dollars.

Engine oil and filter change

We drain old, contaminated oil and replace it with fresh marine-grade oil and a new filter. Used oil contains combustion byproducts, acids, and moisture that cause corrosion during storage. Starting winter with fresh oil eliminates these contaminants and ensures your engine has optimal lubrication protection. When spring arrives, your engine starts with clean oil providing immediate protection.

Lower unit service (for outboards & sterndrives)

Lower unit gear oil is drained and inspected for water contamination or metal particles that indicate internal damage. We refill with fresh marine gear oil to protect gears and bearings throughout the winter. This service prevents corrosion in the lower unit and ensures smooth operation when you return to the water.

Battery removal and storage preparation

We disconnect and remove the batteries from your watercraft to prevent discharge and freezing damage.

Exterior Hull Protection & Cleaning

Your hull is thoroughly washed to remove dirt, algae, salt, and mineral deposits that can cause staining and damage during storage. We apply protective wax to gelcoat surfaces, creating a barrier against moisture and UV damage. Vinyl and canvas components are cleaned and treated with protective conditioners.

Interior Cleaning & Protection

The interior is cleaned and prepared for storage. We remove debris, clean all surfaces, treat upholstery and carpets with mildew preventatives, and ensure drainage plugs are open to prevent water accumulation. Compartments are left open for ventilation to prevent mold and mildew growth.

Professional Shrink Wrapping

Your watercraft receives professional shrink wrap protection that shields it from snow, ice, rain, UV rays, and debris throughout the storage season. We use heavy-duty marine shrink wrap with proper venting systems to prevent moisture buildup while keeping the elements out. Support poles prevent sagging and water pooling. The result is a watercraft that emerges from winter storage clean, dry, and ready for service.

Spring commissioning (dewinterization) services

When boating season returns, our comprehensive spring commissioning service reverses the winterization process and ensures your boat, jetski, seadoo, or PWC is ready for safe, reliable operation.

Complete system reactivation

We remove all antifreeze from cooling systems, reconnect batteries, reinstall propellers, and reverse all winterization procedures. Fuel systems are primed, engines are checked for proper oil levels, and all components are prepared for operation.

Pre-season system testing

Every system is tested before you take delivery. We verify engine startup and operation, check cooling system flow, test electrical systems and gauges, inspect steering and throttle response, and confirm proper operation of bilge pumps, lights, and accessories.

Safety inspection & certification

A complete safety inspection ensures all required equipment is present and functional. We check navigation lights, horn operation, fire extinguisher condition and expiration dates, flotation devices, emergency signaling equipment, and compliance with Coast Guard requirements.

Fluid level verification

All fluids are inspected and topped off as needed, including engine oil, hydraulic fluid, power steering fluid, and coolant. We verify no leaks developed during storage and that all systems are ready for the demands of a full season.

Get your free winterization quote today

Don't wait until the first freeze threatens your watercraft. Contact us today for a free, no-obligation quote on winterization and spring commissioning.

Give us a call at (248) 366-6860 to speak with our team, or fill out our online form for a fast response. We'll provide transparent pricing and answer any questions about our winterization process.

Protect your investment with professional winterization from experts who understand Michigan winters.