Castrol Vecton 15W-40 CK-4 with unique System Pro Technology™ is an advanced part-synthetic heavy-duty diesel engine oil that conforms to the requirements of PC-11 engine oil technology. Castrol Vecton 15W-40 CK-4 can be used in diesel engines where API CK-4 or CJ-4 and below is required.

Castrol Vecton 15W-40 CK-4 is engineered specifically to deliver longer oil life, thus enabling longer service intervals even under severe operating conditions. In fact, it delivers extended drain intervals of up to 97,000 kilometers or 770 hours*.

Adapting to Lower Emissions

New technology developments in diesel engines have led to lower emissions in heavy-duty vehicles. In turn, these advances in technology also result in increasing levels of torque within the engine, which leads to higher pressures and temperatures.
Castrol Vecton 15W-40 CK-4 adapts to increased pressure and temperature with proven shear stability and oxidation performance, extending useful life of the
oil for longer service intervals and higher productivity.


Castrol Vecton 15W-40 CK-4 offers the following benefits in support of modern diesel engine technology:
  • Excels under high pressure. Engine combustion pressures are increasing, which puts increased pressure on key engine parts. Castrol Vecton 15W-40 CK-4 with unique System Pro Technology™ is formulated to hold its viscosity under high shear contacts to extend oil life.
  • Performs at high temperature. In modern engines, engine oil is subjected to areas of very high temperature; this causes oxidation and oil thickening. Castrol Vecton 15W-40 CK-4 is formulated to fight oxidation to extend oil life.

Industry Approvals and OEM Specifications

  • API CK-4, CJ-4, CI-4 Plus
  • CAT ECF-3
  • Mack EOS-4.5
  • Volvo VDS-4.5
  • DDC DFS 93K222
  • Cummins CES 20086
  • RVI RLD-4
*In combination with and following a proper used oil analysis program like Castrol Labcheck®