Yep I know the oil and the state distributor who I worked with at Adelaide Engine Service many years ago.....good stuff.
It's not actually made here, it's imported from the US and blended then bottled here.
I don't use anything else....but stick to the regular change intervals suggested by your owner's manual.
Just quietly.....I think Troy was living under a rock in the USA .
Seriously though, many Top Fuellers use it and reputable dyno shops sell it, ie: Boostworx, Hi Tech Dyno, Graham West, and I think TurboTune (not sure on that one) etc etc.
Not to mention Adelaide's own Marco in the Keith Black powerered '57 Chev.