Seems like a good deal on Valvoline Restore and Protect Engine Oil. Usually near the $100 mark so quite a substantial saving.
This oil is highly regarded as being able to clean engine deposits as seen by many reviews online (including "The Motor Oil Geek" Lake Speed https://www.youtube.com/watch?v=-IDvx1LtqVM).
Also available in 10W-40 here: https://www.autoone.com.au/products/valvoline-restore-and-pr…
Not an all-time low ($49, earlier this year), but still a substantial saving.
I price matched with Repco the last time.
Both 5w-30 and 10w-40: Suitable for: Ford, Holden, Mazda, Nissan, Subaru, Toyota.*
Interesting, It implies other brands do not make engine deposits, or these particular brands make engine deposits, or they are not able to make for other cars, yet!