and thanks to Naks pointing out that the Edge Professional above is a WSS-M2C-934-B spec oil which is for the V6/V8 engines, not the four cylinder, even though Castrol claim it for the 2.4l in their spec sheet.
There are some other oils that meet the WSS-M2C-934-
B spec here in Oz, eg 
Mobil Super FE Special 5W-30, 
Caltex Havoline Energy 5W-30 and 
Shell Helix HX7 AF 5W-30, but whether they've been updated to the 'C' )
Hi Rick, I have been following this thread with interest (although I have a td5)
and regularly see 5 or 10w/30 recommended but I have always steered clear of the 30 because I understood this to mean a max ambient of 40 degrees and we are quite often driving in plus 40 up here for prolonged periods.
 
Have I misunderstood this spec or should I be looking at ?w/40 or above as I have been doing?
I assume this applies to the Puma's as well.
Cheers,
Paul.
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