With the introduction of the latest API and ACEA specifications rock oil have produced Synthesis 4 Auto engine oil which provides the ultimate in engine lubrication.

During extensive development testing, Synthesis 4 Auto has proved to be an oil for extremes. Its wide viscosity range gives superior protection in conditions ranging from cold winter starts to the severe heat generated in racing engines. The advanced combination of additives combined with the purest synthetic base stocks significantly reduces wear and keeps all engine components clean.

  • Outstanding thermal and shear stability
  • Exceptionally low volatility
  • Excellent control of engine deposits and blow-by contamination
  • Superb wear protection
  • Significantly reduces friction, releasing full engine power

Synthesis 4 Auto 5W-40 meets or exceeds the following specifications:

  • API SL/CF
  • ACEA A3, B3, B4
  • MB 229.5
  • VW 502.00 / 505.00
  • VW 503.01
  • GM-LL-B-025
  • Renault RN 0700/RN0710