Then why not get another similar GIII product, and not have to pay the rip-off premium to the shysters?
Off Topic: A few weeks ago I tried out the Castrol American website oil chooser thing to see what would come up for light/medium duty American diesels, well the newer engines nothing would be listed. Tried again this week, and guess what they recommend for NA Ford PS F350 7.3L diesel all climate..... 5w 20!!! Yet go to the Australian site and they recommend the correct products for this application. To me yet another example that Castrol NA has its head planted firmly up it own rear end that I am now thinking it needs to just die as quickly as possible, one more nail in the coffin. At least shows that oil recommendations in NA are probably solely driven by CAFE and am leaning towards might as well throw most manufacturer and oil company recomendations right out the window. Ok, maybe not that bad, but at least any recomendation where they consider the geographical location other than temps take with a large grain of salt.
Rant off