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road curving through green woods - Shell Unleaded

At Shell we are committed to helping you go further. Shell Unleaded with Fuel Economy Formula has been designed by Shell experts to give you extra kilometres.*

Shell has played a leading role in the development of high quality fuels. For over 100 years, we have been supplying quality fuels, and investing in the best people and science in order to drive fuel technology forward.

Through our international network of research and development centres, we’ve performed road trials equivalent to going round the world hundreds of times.

Designed for extra kilometres

Shell Unleaded with Fuel Economy Formula is specially designed to give you extra kilometres by helping combat efficiency losses caused by deposits in your engine.*

* Based on tests using fuel without additives and may vary by vehicle.

Image 1. Harmful deposits on a valve. Image 2. The Fuel Economy  Formula is designed to prevent the

Shell Unleaded with Fuel Economy Formula has been designed to prevent deposits.

Shell’s fuels scientists have explored where losses take place and have developed fuel formulation strategies to help improve engine combustion efficiency, creating innovative fuel technologies designed to give you extra kilometres.

Shell Unleaded with Fuel Economy Formula has been formulated to address a number of ways the fuel and your engine work together.

Shell's fuel scientists have developed strategies to help maximise the amount of chemical energy in the fuel that’s converted to useful work at the wheels, driving you forward.

Formulated to help keep your engine clean

Combustion is most efficient when the precise amount of air and fuel are mixed together at the right time.

With some conventional fuels, deposits may form over time on the back of the inlet valves. This can lead to delays in the required fuel charge entering the engine and a poor mix of fuel and air, reducing your engine’s efficiency.

Shell Unleaded with Fuel Economy Formula has been formulated by Shell scientists to help prevent the build-up of these deposits, helping to maintain your engine’s efficiency.

We go to great lengths to understand the needs of our customers.  That's why there is a range of Shell Unleaded petrols for you to choose from.

Shell Unleaded Petrol

Shell Unleaded petrol has a minimum Research Octane Number of 91.

Shell Unleaded petrol is designed for use in all motor vehicles registered in Australia since 1 January 1986 and some pre 1986 models (refer to owners manual to confirm this application).  It is also suited for all 2 and 4 stroke applications associated with motorcycles, marine, motor mowers, chain saws, brush cutters, etc., which have a requirement for petrol with an octane number of 91 or less.

Shell Unleaded petrol contains our exclusive Fuel Economy Formula, designed to prevent the build-up of carbon deposits, helping to maintain your engine’s efficiency. A clean engine will help your vehicle work more efficiently and reduce emissions.

Shell Unleaded 95*

Shell Unleaded 95 has a minimum Research Octane Number of 95 and is specifically formulated for use in many imported and high performance vehicles which are designed to run exclusively on premium fuels with a minimum octane rating of 95.

Shell Unleaded 95 is designed to ensure your engine operates with improved performance and efficiency and also contains our exclusive Fuel Economy Formula, designed to prevent the build-up of carbon deposits, helping to maintain your engine’s efficiency.

*Shell Unleaded 95 is available as Shell Premium Unleaded at independent Shell branded outlets.

Shell Unleaded with Ethanol

Now more than ever motorists are looking for cleaner, more efficient fuels.

Shell Unleaded which contains up to 10% ethanol  helps to reduce your carbon footprint.  It also contains our exclusive Fuel Economy Formula, designed to prevent the build-up of carbon deposits, helping to maintain your engine’s efficiency.

Find out more about Shell Unleaded 91 with ethanol.

Quote on research and development

Shell Unleaded with Fuel Economy Formula is the right fuel for drivers who care about fuel economy and quality.

If you care about fuel economy

Shell Unleaded with Fuel Economy Formula has been designed by Shell’s international team of fuels scientists to give you extra kilometres.*

If you care about quality

We go to great lengths to understand the needs of our customers. In fact, over the years, we’ve performed road trials equivalent to going round the world hundreds of times. Our ongoing investment in research and development programmes is focussed on developing fuels designed to move you better.

* Based on tests using fuel without additives and may vary by vehicle.

Find more information about Shell Unleaded with Fuel Economy Formula in our Frequently Asked Questions.

How does the Shell Unleaded with Fuel Economy Formula work?
Shell Unleaded with Fuel Economy Formula is designed to help improve fuel economy by reducing efficiency losses caused by engine deposits.*

How does this fuel compare to the previous Shell Unleaded petrol in terms of fuel economy/ money saved?
Shell Unleaded with Fuel Economy Formula is designed to give you extra kilometres. It contains Shell’s Fuel Economy Formula which is designed to improve cleanliness, therefore help improve engine efficiency.  We do not claim specific fuel economy benefits for our products because the fuel economy any particular motorist achieves is also highly dependent upon driving style, weather conditions and the type and condition of the vehicle – try it and judge for yourself.

Why is the new Fuel Economy Formula not used in all Shell petrol?
Shell Unleaded with Fuel Economy Formula has been designed to meet the needs of drivers seeking a fuel designed to help provide improved fuel economy at a competitive price. In fact, Shell Unleaded with Fuel Economy Formula has been specifically developed to offer extra kilometres. Other Shell fuels are designed to meet the needs of customers seeking different performance attributes from their fuel.

Can I mix it with another non-Shell petrol?
Yes. Shell Unleaded with Fuel Economy Formula can be mixed with other unleaded automotive fuels.  However, to help maximise the opportunity to realise the full benefits it is designed to offer, Shell recommends that you refuel with Shell Unleaded with Fuel Economy Formula every time.

* Based on tests using fuel without additives and may vary by vehicle.