MF, at Sca or Repco you are generally looking at $30 for a litre of Penrite ten tenths oil or Silkoline that you squeeze through the filters - they also do aerosols which you are generally $20 for 3-400ml.
They also sell filter cleaner at about $15 a litre.
There are then about 50 other brands - Castrol, NoToil, Nulon, Motul, k&n, Maxima, etc
So yes, thats why I just grab the $12.99 2l bottle of chain oil from Aldi - its dyed blue so you can see where it is and isn't on the foam. Most Aldi's still have a few bottles left from the last special buy, but they are having it again when the mowers are out next saturday.
GA spares actually do distribute Maxima - again most mower shops charge $16 - $20 for the aerosol.
A mate of mine does bike racing (enduro and motorcross I believe) - he uses Maxima Fab1 or Motul I think. But he has admitted that he once used bar oil to get out of a bind
