Autobarn have once again delivered us another great cheap motor oil deal just before christmas this time it's Castrol GTX Original 20W-50 5 litre pack motor oil for $9.99 (save $13.00). This oil is rated at API SJ and is typically suited for older vehicles pre 1990 which can use a 20W-50 viscosity mineral based engine oil.
And don't forget if your after an oil filter to grab one at the same time as the oil as they take 10% off the price of the oil filter aswell. Just make sure they apply the discount when purchasing as they easily tend to forget! lol
Cheers!