Do yourself another favour. When you next visit ls1.com hsv/holden, type "oil" in search bar. Get yourself ready for shock as you will find almost all the forum having some complaint about oil consumption. many use around 1-1.5 litre each service of oil,another one had that before the 10000 service!
I called my bro ,he has million k's on his au xr dash,he works in brisbane and comes to sydney alot(>150.000)on the clock now. Does your car use anyoil now?or the color of oil changes to darker?it must be!!but no,she's still as the day he bought it.
Being a ford lover, you have to learn how to live with your holden friends teazy delusions,it's very hard but get used to it, cause no one of them will confess that he done a mistake.
and things will stay that way even with barra, people love commy more than anything else in the world!for some reason!