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Petrol Explained

Petrol nozzle in petrol tank

With so many different fuels appearing on the market it can be difficult to understand what they mean. It is best to check your vehicle handbook to determine what type of petrol is recommended for your car, however here is a quick guide.


Unleaded Petrol (ULP) usually has a Research Octane Number of 91 to 92 and has been the recommended fuel for the majority of passenger vehicles in Australia since it was introduced in 1986.


Premium Unleaded Petrol (PULP) has a higher Research Octane Number than standard ULP. PULP is usually at 95 to 96 Research Octane Number, although there are an increasing number of service stations offering 98 octane. High performance cars often require for high-octane fuel for maximum efficiency.

Ethanol and E10

Ethanol (ethyl alcohol) is a clear, colourless liquid, generally manufactured from grain or sugar. In the Northern Territory, ethanol is provided to motorists as E10 where the fuel contains a maximum 10% ethanol and minimum 90% oil based petrol.


Opal has a Research Octane Number of 91 and is a low aromatic unleaded fuel that can be used in all applications that require normal ULP. Opal fuel is manufactured by BP and due to its reduced aromatic levels, has been introduced to areas of the community in an attempt to reduce the incidence of petrol sniffing.

Graphic_Fuel CardRemember, AANT members receive United Fuel 6c discount 

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