[Stuart]

The specs say it can be used for 'automotive fluids'. If you look at the Q&A section on that website, several people ask about using it for gasoline and they have a standard disclaimer response, as shown below. I assume the main reasons are it doesn't have the safety feature on the nozzle and it's not red, so it's not approved for gas in cars for street use.

Per the manufacturer: This is not a portable fuel container as described by ASTM, EPA, ARB and other official agencies. For Racing Fuel only, such as Nitromethane or Methanol, used in sanctioned motorsports. NOT for fuel used on highways. Also for storage and transport of feed, water, attractants, fluids and other outdoor products.