|Mack Super-Liner & Super-Liner II|
|Body and chassis|
|Body style||Conventional (bonneted cab-chassis)|
|Engine||Mack EA7 (6-cylinder) or EA9 (V8)|
|Transmission||Mack / Fuller (manual)|
The Mack Super-Liner is a class 8 heavy-duty truck that was introduced by Mack Trucks in 1977, to replace the Mack RW (R-Western) model. It was a development of the prototype Brockway Super-Liner, Brockway being a Mack subsidiary closed in early 1977. Production lasted for fifteen years until it was discontinued in 1989. The model designation is RW. Mack Trucks Australia still manufactures the Super-Liner as a lighter-duty version of the Mack Titan.
In 1984, Mack Trucks introduced the Super-Liner II for model year 1985. As a promotion for the line, Mack built a series of special edition Super-Liners. The special edition Super-Liners were called Magnum; all had Mack E9 400-500hp engines, most with the Mack T2090 transmission, on the 613 frame, and came with a red interior and black exterior with Magnum written on the hood in red, yellow and orange letters. These trucks were made for only one model year. Mack built a total of 250 Magnums; 186 Super-Liner II (RW 613), the remaining 64 were Ultra-Liner (MH 613). 
In 1988, Mack Trucks Australia made 16 special edition Super-Liner II Bicentennials with the E9-500 V8, Mack 12-speed triple countershaft transmission, Mack front and rear axles, long taper-leaf springs on front and camelbacks on rear, Spicer 1810 HD driveshafts and a 5842mm (230 inch) wheelbase. The special limited edition models were named after people influential to Australian history, including James Cook, Captain Bligh, Ludwig Leichhardt, Governor Phillip, Ned Kelly, Kingsford Smith, and John Flynn William Hovell. One remaining example is operated by Eagle Towing Service, of Ringwood Victoria and has since been converted to a heavy towing salvage truck. Two more remaining examples are from Mactrans Heavy Haulage, who own Captain Starlight and Thunderbolt. 
- Corporate History: 1970-1979 - Mack Trucks.com
- "Magnum". BigMackTrucks.com. Retrieved 28 December 2015.
- "Mack Trucks Australia News : Truckworld.com.au". truckworld.com.au. Retrieved 28 December 2015.