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The Art of Winterization: The Best Boat Winterization Tips from the Experts Who Do It to Hundreds of Boats Every Year

  • Writer: Dandy Automotive
    Dandy Automotive
  • Jun 29
  • 6 min read
Boat Winterization Calgary, Airdrie and Alberta

With 35 years in business, over 100 years of experience, and thousands of boats serviced to date, Dandy Marine understands the key aspects of safe, effective boat winterization in Calgary and Airdrie. Read on for the information you need to know.



The southern Alberta summer boating season is short but glorious, and Calgary and Airdrie boaters know it’s worth it to have a few short months on the water, even if it means winterizing a boat for many months during the off-season.


But winterizing a boat in southern Alberta doesn’t have to be as complicated as one may think. There are a few extremely important, yet quite simple, service techniques one must perform each year to ensure their boat is ready to cruise on the water next spring.


It’s never too early to think about winterization and proper storage, because effective winterization is how boat owners prevent the majority of maintenance issues and expensive mechanical failures on their boats.



  1. Boat Winterization Airdrie: The Three Most Important Steps Include Protecting Your Investment with 8mm Shrink Wrap, Employing Professional Fluid Care, and Utilizing Safe Battery Storage


A boat deserves a spa day before a long winter nap. When done right, the winterization checklist gives the boat a proper rejuvenation period, rather than simply parking it off to the side and neglecting it for several months. If there are three things the folks at Dandy Marine would want Calgary and Airdrie boat owners to learn about boat winterization, it’s boat shrink wrapping, fluid maintenance, and battery maintenance. These three alone, when done right, can save boat owners thousands of dollars in not having to do expensive repairs.


  • Boat shrink wrapping in Airdrie. Southern Alberta winters require a tougher, more durable shrink wrap than what one may use in more temperate climates. For example, most boat storage facilities use a thin, 6mm shrink wrap, but Dandy Marine uses a thicker, tougher, 8mm shrink wrap that is more sustainable for withstanding Alberta clippers and other heavy storms.


  • Fluid care for boats in Calgary and Airdrie. Dandy Marine is a factory-certified dealer for Volvo Penta, Mercruiser, and Indmar, meaning the shop’s best marine technicians in Calgary and Airdrie have the tools, know-how, and training needed to gently and carefully prepare your boat engine’s fluids for winter by stabilizing the fuel, changing the engine oil and lower unit gear lube, and flushing the cooling system with a specialized, non-toxic marine antifreeze. When all four tasks are performed by experienced, honest marine technicians, this process prevents fuel degradation, internal engine corrosion, and costly freeze-damage.


  • Boat battery and electronic care. To prepare the boat’s electronic systems for winter, one must disconnect the batteries, remove them, store them in a temperature-controlled environment, place them on a maintenance charger when needed, and remove all portable electronic devices from the boat. All electronics and batteries must be stored in a temperature-controlled environment during winter, or they will likely be non-operational during the spring run-up.


It must be emphasized that good 8mm shrink wrap, proper fluid care, and proper battery/electronic care are the three most important aspects of boat winterization. Different types of boats require different winterization techniques, and there is more that should be done, but these three are by far the most important.



  1. Boat Shrink Wrapping Alberta: The Benefits of 8mm Shrink Wrap for Boat Winterization


What are the benefits of 8mm shrink wrap vs. tarps? Or the importance of protecting boat upholstery from Alberta winters and professional boat storage prep in Airdrie? What is 8mm shrink wrap, and why is it needed for Calgary boat winterization?


8mm marine shrink wrap is simply a much thicker version of the industry standard. The thicker, tougher material protects the boat’s exterior features from snow, wind, rain, sleet, ice, hail, and other severe winter elements. And because the boat’s exterior features are not damaged from the elements during winter, the interior features also remain safeguarded during the off-season.


Boat Fluids Calgary, Airdrie and Area.
  1. The Four Essential Steps to Winterizing a Boat’s Fluids, Plus the Fifth Step, Safe and Secure Storage!

If you only ever do four steps to prepare the fluids in your boat for cold winter temps, please let it be these four.


(If you don’t want to do these steps, contact Dandy Marine today for a quote for Airdrie boat winterization and storage. Schedule boat winterization with Dandy Marine by booking online or by emailing sales@dandy.ca).


1) Address the fuel system. Start by stabilizing the fuel with a high-quality marine fuel stabilizer added to the gas tank. For ethanol fuel, top off the gas tank to 95%. Run the engine for 10 to 15 minutes.


2) Move to the engine oil and gear lube. Change the engine oil by warming up the engine during the previous step. Change the oil and filter. Then check the lower unit gear lube. Remove the drain plug, drain the fluid, and check it for milkiness or metal shavings. If neither is present, refill with fresh, manufacturer-recommended lubricant. If either milkiness or metal shavings are present, contact a certified marine mechanic in Calgary. 


3) Now address the engine cooling system. Run the engine with fresh water, then fog it with a fogging oil to produce a rust-resistant coating on the cylinder walls, valves, and pistons. Do this via the air intake until the engine stalls. Now, drain all the raw water from the engine block and manifolds, and run non-toxic pink marine antifreeze through the cooling system. Always pull the hull drain plug to allow any bilge water to escape before it freezes.


4) If the boat has a freshwater tank, water heater, or marine head… If any of those factors are applicable, pump drinking-water-safe marine antifreeze through all the lines, running every faucet and shower until pink antifreeze comes out.


5) The fifth, bonus step is to find boat storage in Calgary and boat storage in Airdrie. Dandy Marine offers 24/7 surveillance for boats and RVs at a gated, key-coded entry storage facility just ten minutes north of Calgary in Airdrie. Quoting the Dandy Marine storage department’s mission statement:


“We can store your rig, perform seasonal maintenance while it’s with us, and have it ready for you to pick up and head straight to the water.” 



  1. Marine Winterization Services Calgary Comes Down to Protecting the Vessel from the Elements


The Calgary and Airdrie weather conditions are brutal for several months out of the year, and a single drop of water in the engine block can turn into a very expensive ice cube during an Alberta winter. That’s why preparing the engine for winterization is so critical. After all, it needs to be an engine block, not an ice block!


In business for over 35 years and combining over 100 years of experience, Airdrie’s best marine shop and boat repair business, Dandy Marine, has established itself as the leading full-service marine mechanic garage in the greater Calgary area. Dandy employs honest marine technicians and maintains a clean office, shop, and lobby that makes a short customer wait during service not feel like a chore, but rather like a relaxing, enjoyable experience, a break from the hustle and bustle of day-to-day life.


Last but not least, if the shop is clean, the work is precise, and the customer leaves with a boat that works, and that works well.



  1. The Dandy Difference


Dandy’s precision engineering, diagnostic accuracy, and certified peace of mind are intentionally wrapped up into a yellow triangle logo, thus emphasizing the three pillars of ethical mechanic work. On every boat upgrade or service you could want, you’re going to get the Dandy difference. 


Dandy Marine has Airdrie’s best marine mechanics and Calgary’s best marine technicians for boat winterization. If you’d like to leave this task to the professionals, schedule a service today.


Schedule boat winterization with Dandy Marine by booking online or by emailing sales@dandy.ca. And to learn more about Calgary and Airdrie’s best marine winterization service, contact us and let us know what kind of rig you’re working with. We’ll tell you what we can do for you. Dandy Marine offers the best boat service in Calgary and the best boat winterization in Airdrie, employing the best marine mechanics in southern Alberta, guaranteed.


Until next time, we hope you have a Dandy day!


Sources: 

[1] BT. “Best Boating Practices: Winterizing Your Boat and Outboard.” On the Water, 2024. onthewater.com


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