The Shell Helix Ultra X 5W30 is Specifications: API SN PLUS/SN; ACEA A3/B4; BMW LL-01; MB approval 229.5, 226.5; Renault RN0700, RN0710. (From the Shell web site)
Some other choices
Nulon Full Synthetic 5W-30 Long Life Performance, it's Dexos1-Gen2 and Ford WSS M2C 946A.
Valvoline SynPower 5W30, it's SN-Plus, Dexos1-Gen2 and Ford WSS-M2C946-B1
Castrol Magnatec Fuel Saver DX 5W30, it's API SP, ILSAC GF-6, Dexos1-Gen2, Ford WSS-M2C946-B1 and Ford WSS-M2C961-A1
They are the obvious choices for a LSPI- protection oil that is commonly available in Australia and not Penrite. Basically you want at least one of API SN-Plus, API SP, ILSAC GF-6 or Dexos1-Gen2. Maybe some Ford or Euro OEM specs also count, but I'm not familiar with these.
Now from this link, its says
www.oilspecifications.org
Ford WSS-M2C948-B Largely based on the ACEA C2 oil sequence this spec requires a low SAPS 5W20 oil and is primarily designed for the 1.0 liter, 3-cylinder EcoBoost engine. Contains in-house tests for fuel economy and piston deposit control. Oils meeting this spec must provide a 0.9% fuel economy improvement over regular 5W-20 oils.
So for me, I would want a low (or mid) SAPS oil as well as LSPI (low speed pre ignition) protection for your DI-turbo engine. So I would rule out the high SAPS (A3/B4) Shell Ultra X oil. But any of the other 5W30 Dexos1-Gen2 oils above would do me. Sure they are not thick Euro oils, but rather thinner ILSAC oils, but they are still 5W30s which is thicker than 5W20 without been over-the-top, so a reasonable choice. You may not get your 0.9% fuel economy improvement, but I could live with that.
Now, just looking up that Nulon oil, it has a SAPS level of SA = 0.9%, the Magnatec DX has a SA = 0.94%. Not low, but not super high either.
A typical Euro full SAPS oil, like Edge 5W30 A3/B4 has a sulphated ash SA = 1.2%
According to the ACEA sequences a C2 oil is mid-SAPS with SA
Having said all that, most 948-B oils I can find are API SN and ACEA C5 (lower HTHS than C2 but same SAPS) with a typical SA = 0.8 % (for Mobil Super 3000 F 5W20).
Geez......I would just get a 5W30 Dexos1-Gen2 oil if you can't get the actual Ford 948 stuff.