Diesel power!
Last year the best price in the 20ltr Shell rimula RX 15W-40, 20 Litre was $108. This years is 9.9% cheaper.
As well if your diesel takes API-CI-4, ACEA E7, save 50% on Castrol RX Diesel Engine Oil, 20ltr, 15w-40. Will be $59 between 02/01/2016 and 03/01/2016. Currently $119.40
http://www.supercheapauto.com.au/online-store/products/Castr…
Same price on their eBay store, useful if you already have other things to buy to take you over the $150 minimum