If you’ve been tempted to save some money by putting regular unleaded into your vehicle instead of premium unleaded, here’s what you should know.
Owning a car that requires premium unleaded petrol can be a blessing and a curse.
While using unleaded fuel with an octane rating of 95 or higher can potentially lead to improved engine performance and better fuel economy, it’s also more expensive at the bowser.
At the time of writing, the NRMA’s weekly fuel report had the peak price of premium 95 in Sydney at 235 cents per litre, with the peak price of premium 98 in Sydney at 240 cents per litre – both notably higher than the peak price of regular 91 unleaded, which peaked at 217 cents per litre in the same week.
So if you’re on a budget, can you save some cents by skipping the premium fuel and opting for 91 unleaded instead? We asked the experts.
What’s the difference between regular unleaded and premium unleaded petrol?
RON stands for Research Octane Number, which is a measure of fuel stability – the higher the number, the more ‘stable’ the fuel.
“The octane number of a fuel indicates its tendency to auto-ignite or detonate under high temperature and pressure in the presence of air,” Aleks Urosevic, an Expert Technologist at BP’s Innovation and Engineering department, has previously told Drive.
Extracted in full from: https://www.drive.com.au/caradvice/can-you-put-91-in-your-95-or-98-car/