Why does the discount change from 6c to 4c? 24 May 2022 03:55 Updated The 6c per litre discount is an introductory one time offer only. The ongoing daily discount is 4c per litre. Related articles Can I use this offer on any petrol types? Can I stack this discount with other offers? Do I receive my 10% membership discount as well as other promotional discounts? Why isn’t the fuel discount barcode loading? How do I purchase G’day Parks Gift Vouchers?