As stated in title, generally accepted Aus wide, but cannot be sure.
A few imp T&C.
Cannot be used in conjunction with any other offer or discount. Discount does not apply to purchases of GPS navigation devices, motor vehicle or marine batteries, engines, gift cards, any trade purchases and Trade Workshop Equipment. Discount does not apply to purchases from the Repco Authorised Service network. Store stock only.
Can confirm this is valid for RAC (WA) too - http://rac.com.au/Membership/Show-your-card-and-save/Auto/Re…