8 Practical Tips to Avoid Misfuelling Your Boat at the Marina

Misfuelling your boat at the marina fuel dock is a common mistake that can lead to serious engine damage, costly repairs, and frustrating delays. Whether you're filling up at Westhaven, Gulf Harbour, Tauranga, or Waikawa, taking a few simple precautions can help you avoid these issues and keep your vessel running smoothly. The key is to be vigilant, organised, and aware of best practices for marine fuel handling.

First, always remember: never start your engine before refuelling. This rule is crucial because it prevents ignition of fuel vapours in case of spills or leaks. Before you approach the fuel dock, check that your boat’s fuel cap is secure and that your fuel system is in good condition. When you arrive, inspect the nozzle and fuel hoses for any signs of damage or leaks. Using the correct nozzle for your fuel type—diesel or petrol—is essential. Diesel nozzles are typically larger and won’t fit petrol fill points, but always double-check to avoid accidental misfuelling.

Label your jerry cans clearly with the fuel type to prevent confusion, especially if you store spare fuel on board. When transferring fuel from jerry cans, use dedicated, clearly marked containers and avoid mixing different fuel types. Be cautious with tender fuel habits—use a separate, labelled container for your tender or outboard fuel to prevent cross-contamination.

At the fuel dock, pay attention to the nozzle check. Ensure the nozzle clicks into place securely and that you’re using the correct one. If you’re unsure, ask marina staff for assistance. Also, avoid topping up your tank to the brim, as overfilling can cause spills and vapour leaks. Instead, fill slowly and stop when the nozzle automatically shuts off.

What to do right now: double-check your fuel labels, inspect your fuel system, and review your refuelling procedures with your crew. Keep a checklist handy to ensure all steps are followed each time you refuel. Regularly maintaining your fuel system and staying vigilant can prevent misfuelling mishaps.

If you suspect contaminated fuel, water ingress, or misfuelling issues, contact EEK Mechanical immediately. We send a certified marine technician 24/7 to drain, flush, and restore your vessel’s fuel system, minimising downtime and damage. Call us on (866) 777-3712 for prompt assistance and keep your boating adventures safe and worry-free.