Spotted this on the back page of the current catalogue, always used to buy the Syn-X 3000 when it's been ~$20, may as well spend the extra $4.99 for the full synth. I'm assuming it's Group 3 but still cheaper than anything else.
http://www.gulfwestern.com.au/product/syn-x-5000-10w-40/
Specifications:
SN/CF, ACEA A3, B3, B4, MB 229.3, RN 700/710, VW 502, 505, PSA B71-2300.
Very good price for 5L of Full Synthetic. Bought four bottles