the other story
Actually this is an advice more tailored to Europe, as Australia will probably have other products. I think you should look out for stuff more or less comparable.
First, I hope you are capable to read German
http://www.citroen.ac/downloads/2002_10046_Rost.pdf
Inside:
I did my SAAB and few bikes with Mike Sander. The best stuff, but not the most easy to work with. The grease has to be heated, you need a compressor etc.
http://mike.british-cars.de/english.htm
On several other bikes I used an aerosol can Fluid Film AS-R. It is more solid as the tested Liquid A. It is solid enough to not wash away and unlike waxes it keeps crawling forever and it doesn't dry out. I am pretty sure for bicylce use you can't have anything better.
http://www.fluidfilm.de/auto2_AS-R.php
http://www.korrosionsschutz-depot.de...fluid-film.htm => one need both can and 60cm nozzle (Hohlraumsone)
No need to use converters (like Fertan).
Outside:
The prefered method is mechanical rustremoving. In case place very difficult to approach or for fighting last tiny rustparticles and creating stable underground for further treatment (important) you could go for chemical rustremoving.