Business lines Global brands Select location Fuels Lubricants Mobil Card Our service stations About Us Contact Us Mobil Home Our fuels FAQs Mobil Fuels FAQs Find out more on commonly asked questions by selecting the relevant category. Mogas FAQ What does additised product mean? A detergent additive is present in Mobil petrol grades Special Unleaded 91, Special E10 94, Extra 95 and Supreme+ 98 and in Mobil Diesel grade Special Diesel at all participating Mobil branded sites & 7-Eleven stores. The additive is designed to improve engine performance by helping vehicle engines run more smoothly. It works to help remove harmful deposits from vital engine parts (fuel injectors and intake valves) that can build up over time. Whichever fuel you pump, the new Mobil fuels at participating Mobil branded sites & 7-Eleven stores help provide better fuel economy. What is the benefit of the detergent additive in Mobil fuels? What benefits can I expect for my vehicle from additised product? Why is the new fuel better than before – what advantages does it have over your previous fuel? Will I notice a difference immediately using additised product? Octane FAQ What is the Octane rating of Australian petrols? What colours are the different petrol grades? (Applicable also to Mobil branded sites & 7-Eleven additised product) My vehicle owner's manual says I must refuel with Premium Unleaded Petrol only. Can I fuel with Unleaded 91? Is petrol controlled by a Government Standard Specification? Do Mobil petrol grades contain detergent additives? Does your 'Premium 98' (Australia) contain any 'Toluene' in its composition? Is the 98 RON rating of 'Premium 98 achieved through blending fuel streams or does Mobil use octane increasing additives? Ethanol FAQ What is Ethanol? How much ethanol will be present in Unleaded E10? Unleaded E10 suitable for my car? Can I switch between Unleaded E10 and other grades of Mobil petrol? Will using Unleaded E10 affect the performance of my vehicle? Will Unleaded E10 reduce my fuel economy? Can I use Unleaded E10 in my ultralight or aircraft? Can I use Unleaded E10 in my marine engine? Can I use Unleaded E10 in my motorcycle? Can I use Unleaded E10 in my lawnmover, chainsaw or other small engine? What if ethanol is not reccommended for use in my car and I have inadvertently filled it with Unleaded E10? Will ethanol-blended fuel attract moisture in it fuel system? What if my car's tank has some water in it right now? Diesel & Biodiesel FAQs How is diesel different from petrol? Does Mobil put sulphur into Diesel fuel? What is biodiesel? What is a biodiesel blend? How is biodiesel produced? What are the standards for biodiesel? Does biodiesel affect the sulphur content of the blended product? What is the source feedstock for the Biodiesel which Mobil is using? What are the labelling requirements? Are biodiesel blends approved for use by car and engine manufacturers? Can I change back and forth between mineral diesel and biodiesel blends? Does the Biodiesel Mobil are using meet the sustainability requirements of the NSW Biofuels Act 2007? Can I claim the biodiesel content of B5 supplied by Mobil against my NSW Government mandated biofuels obligation? Are all dispensers and other equipment involved in the storage and handling of the fuel compatible with blends containing biodiesel? Are special housekeeping measures needed to maintain storage facilities for biodiesel blends? Does biodiesel affect the shelf-life of the blended biodiesel fuel compared to mineral diesel? Is B20 blended diesel compliant with the Australian federal Fuels Quality Standards Act 2000? Is B20 blended diesel suitable for use in all diesel vehicles/equipment? Can I sell B20 blended diesel that I purchase from Mobil on a publically accessible service station forecourt? Mobil service stations Find the nearest Mobil near you. Learn more About us Learn more Mobil Synergy fuels Mobil Synergy fuels are formulated to protect your engine from the first fill. Learn more about our fuels Contact Us Looking for more? Reach out for information on high octane petrols, engine oils and more. Learn more *Mobil Special Diesel performance claims are based on internal and third-party customer testing, laboratory testing and/or literature support. Fuel economy testing was conducted using on-road trucks comparing performance to unadditised diesel. Actual benefits may vary depending on factors such as engine type, driving style, and fuel previously used. Safety data sheets Contact us Select location Privacy center Privacy Policy Terms and Conditions © Copyright 2003-2021 Exxon Mobil Corporation. All Rights Reserved. By clicking “Accept all cookies”, you agree to the storing of optional cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. If you wish to adjust your cookie settings, please click “Customize Cookies”. You can also learn more by clicking Privacy policy Accept all cookies Customize cookies