Nulon Apex+ 5W-30 Full Synthetic Engine Oil 5L $34.99 (Free Rewards Membership Required) + Delivery ($0 C&C/in-Store) @ Autobarn

Very cheap full synthetic oil, one of the cheapest 5L bottles available. 53% off RRP $74.99. Works with most models of the OzBargainer favourite Camry.

API SP, ILSAC GF-6A, and other GM and Ford certifications.

Compatibility tip: API ratings are compatible with anything equal to or higher in the alphabet from your logbook/manual specification. E.g. if your car needs API SN, it will work with SP.

Price beat at SCA to get it for $34.49.