Engine Oil and Fluid Recommendation for Audi A6 Allroad (4BH, C5; 4FH, C6; 4GH; 4GJ) – A6 Allroad 3.0 TDI clean diesel So, the first thing you need to start with the selection of oil is by studying the car's instruction manual or from its service book. Almost always, manufacturers indicate there their requirements for engine and coolant fluids, which are best used for this model.
  • Engine: CKVC
  • Engine oil capacity, liter: 6.4
  • Differential capacity, liter: 0.9-1.0
  • Cooling system capacity, liter: 12.0
  • Year: 2012-14

Engine oil

  • Synthetic oil: Longlife III 5W-30 (Longlife 3 5W-30)

Differential

  • Synthetic gear oil: 75W90 GL5

Power steering

  • Hydraulic fluid: CHF/Central Hydraulic Fluid

Cooling system

  • Antifreeze for the engine: Antifreeze G12+ violet