These guys come up as importers but they don't bring it in.
Pacific-Petroleum-Pty-Ltd
I am assuming you are after Kendall NS-MP Hypoid Gear Lubricant, 1 Qt SAE 80W-90 for your 915. Petrogas have it but only in 60L drums!
Maybe contact Petrogas to see if a customer of there's might sell you a smaller quantity?