Sorry - couple of typos in there - 4L of Motul 5100 from Team-moto for $70. And the Penrite oil was $39 at Repco.

********************
and change in font colour:
Hi All,
Just a bit of info. I've been in touch with Penrite oils here in Aus, looking for a comparable Aus product to Motul 5100. I sent them the oil spec as per the XT owner guide: Reply
"We recommend the designated motorcycle oil MC 4ST 10W40 OR 10W50 FOUR STROKE OILS"
Penrite oils are available from Repco and Autobarns stores.
I paid $70 for a 4L Motul 5100 from a bike shop. I can get a 4L of Penrite MC ST4 10w50 semi synthetic from $40 from Repco.

http://www.datateck.com.au/Lube/PenriteAus/

I've done the oil and filter change using the 10w-50. Seems ok......like oil.....