How much oil

[mihit]

When on the road full time buying a 20 litre drum is not practical, no room to carry it. So 10 litre plus 1litre. Cost of 10 litres of my favoured oil (Penrite semi Synthetic HPR 15w50) varies between $80 to $100 depending upon whether it's on 'special' at the time I need it. 1 litre bottles never go on 'special' & cost between $16 & $20. Once, just once a kindly salesman in a national auto store branch let me have the 1 litre at the same price per litre as the 10 litre drum I was also buying.

Stop in at a reputable garage? (If such things exist) and they should siphon you off enough for cost and maybe a 6pack of VB?
(Or XXXX or Fosters I suppose, depending)