Yes you can use Qantas Business Class Lounge in Sydney, Malaysia Airlines Business Class Lounge in Kuala Lumpur and Oman Air have now opened their new Business Class Lounge in Muscat. Hope that helps you.

I am travelling with Malaysian Airlines as a Business Class passenger from Sydney to Kuala Lumpur. As Malaysian Airlines does not have a lounge in Sydney, which Business Class Lounge, does anyone know which lounge I can have access to? Also my onwards flight from Kuala Lumpur to Muscat and then...