Common fuel industry terms

  • Biofuels are liquid fuels made from organic material, such as plants and animal material, or other waste products.
  • Diesel is fuel made for use in diesel engines
  • E10 is a blend of 10% ethanol and 90% petrol. It is the most commonly available ethanol-blended fuel. The petrol component is generally regular unleaded petrol but there are also premium E10 blends (where the petrol component is either 95 or 98 RON premium unleaded petrol) available.  
  • E5 is a blend of 5% ethanol and 95% petrol.
  • E85 is a blend of 85% ethanol and 15% petrol.  
  • Ethanol is a biofuel made from the distillation of an organic source such as sugar cane or sorghum.
  • Octane refers to the performance of the fuel. The RACQ advises that higher octane fuels have allowed manufacturers to design more powerful and fuel-efficient engines.
  • Regular unleaded petrol is the most commonly used petrol at present. It is commonly labelled as RULP or ULP or 91.  
  • RON or the Research Octane Number is the octane rating of the fuel.
  • 95 RON is a premium unleaded petrol (PULP).  
  • 98 RON is an ultra premium unleaded petrol (PULP).