RX Super 15W-40

A medium ash SAE 15W-40 multigrade diesel engine oil specially formulated to meet the needs of most American heavy duty diesel engines without DPF/DPD exhaust after- treatment devices. 

It is also suitable for many mixed fleet operations.


  • Superior viscosity stability for guaranteed field performance.
  • Improved soot related wear protection.
  • Exceptional piston deposit control for increased engine durability.
  • High shear stable polymer (VI improver) to minimise oil consumption.
  • Suitable for many diesel and petrol engines.


  • SAE 15W-40
  • API CI-4 Plus/ SL *
  • Mack EO-N Premium Plus 03
  • Cummins CES 20078
  • Caterpillar ECF-2
  • DDC Power Guard 93K214
  • ACEA E7
  • Volvo VDS-3
  • JASO DH-1
* Can also be used where API CI-4, CH-4, CG-4, CF-4, CE and CD are recommended.