Ankor wax is terrible stuff - attracts grit and dust and never makes the bus look clean.
My bus has FK1000P liberally applied to the wheels, paintwork and patina areas and its a fantastic sealant - all after a good wash, foam and dry
As Clem says - rub it off back to the paint using thinners and start again
Have a look here
http://www.cleanyourcar.co.uk/sealants/finishkare-1000p-hi-temp-sealant/prod_589.html" onclick="window.open(this.href);return false;
Google it for some reviews - I wont use anything else now as a protector for my bus