Antifreeze for Engines & Fresh Water Systems

Protecting your boat’s engine and water systems from freezing temperatures is a vital step in winterisation. Using the right marine antifreeze prevents costly frost damage, corrosion and cracked pipes.

At Force 4 Chandlery, we stock a wide range of antifreeze for marine engines, fresh water systems and heads from trusted brands. Whether you’re winterising an inboard, outboard, or drinking water system, you can find antifreeze formulas that are safe, effective, and good for both fresh and saltwater.

Top Tip:
Don’t forget to run the antifreeze right through your system — from the intake to the exhaust or tap — to make sure every part is protected from frost. It’s also a good idea to label treated systems clearly, so you know what’s been winterised when you recommission your boat in spring.