Was looking for Synpower and came across this great triple-dip deal.
Repco has reduced to clear their Valvoline Synpower 10W-50 5L engine oil. It's now $40 (reduced from $68)
Repco then have a 20% off offer running this month for NRMA etc. auto club members. You just need to show your card. Brings the price down to $32.
And then on top of that you can further claim $20 cashback via https://valvolinepromotions.com.au/ - "RECEIVE $20 CASHBACK ON ANY 5L VALVOLINE SYNPOWER PURCHASE"
So yeah, if you can jump a couple of hoops, you'll get Synpower for $12. Pretty good!