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Safety starts at the filling station

How to fill a fuel can safely

Transport is only half the job. At the pump, the container, fuel grade, closure and later load restraint all have to be right.

Reading time: 8 minutes
Before the first litre: check container suitability, physical condition and the fuel grade. After filling, close the can correctly and secure it in the vehicle.

1. Inspect the container

Cracks, deformation, corrosion, damaged threads or a questionable seal are reasons not to fill the can. The permanent marking should also remain readable.

2. Check the fuel grade twice

Misfuelling can start with the spare can. ADAC notes that small can spouts may later fit both petrol and diesel filler necks, so clear identification at the pump and another check before pouring are worthwhile.

3. Follow the manufacturer’s filling guidance

Nominal capacity is not automatically an instruction to fill to the brim. Manufacturer guidance takes priority. Yamaha, for example, warns against overfilling petrol containers because fuel expands as it warms.

4. Keep ignition sources away

Petrol vapour is highly flammable. Smoking, flames, sparks and improvised transfer methods have no place around fuel handling.

5. Close and secure the can

  • Close the cap fully.
  • Check the seal and threads.
  • Inspect the outside for spilled fuel.
  • Place the can upright in the vehicle.
  • Restrain it against sliding, tipping and impact.
If fuel is spilled: keep ignition sources away and follow the filling-station or manufacturer safety instructions. Do not simply place a fuel-wet can inside the passenger compartment.

Frequently asked questions

Should a fuel can be filled to the brim?

Follow the container manufacturer’s filling and use instructions. Nominal capacity should not be treated as permission to fill right to the top.

Can a water can be used once for petrol?

No. Use a container that the manufacturer explicitly intends for the fuel.

What matters immediately after filling?

Close the cap correctly, check the outside of the can and secure it upright against movement and tipping.

Sources for this guide

The following authorities and documents were used for this guide. Where rules change, the current original source takes precedence.

  1. Wrong fuel in the tank: petrol and diesel mix-ups [German]ADACMisfuelling risks and the particular mix-up risk when using small fuel-can spouts
  2. Yamaha outboard owner’s manual – fuel and portable-container safety guidanceYamaha Motor EuropePetrol handling, approved portable gasoline containers, overfilling, ignition sources and ventilation
  3. Fuel in a spare can: what is permitted? [German]ADACGerman transport quantities, container marking, restraint in vehicles, international travel and ferries
  4. 10 L PE fuel can with flexible spout – article 21 143 [German data sheet]PRESSOL Schmiergeräte GmbHEAN, nominal capacity, UN mark, materials, dimensions, empty weight and spout