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Castrol VECTON 15W-40 CK-4 with unique SYSTEM PRO TECHNOLOGY™ is an advanced part-synthetic 15W-40 heavy-duty diesel engine oil engineered for modern on-road and off-road diesel engines. It meets the latest API CK-4 requirements and can be used where API CK-4, CJ-4, and earlier categories are specified, making it ideal for trucks, fleets, and heavy-duty equipment operating under severe conditions.
VECTON 15W-40 CK-4 is specifically designed to deliver longer oil life, helping support extended drain intervals when used in conjunction with a proper used oil analysis program. Its SYSTEM PRO TECHNOLOGY™ provides a 45% extra performance reserve* to help fight oil breakdown by controlling oxidation, reducing deposits, and neutralizing harmful acids, so your engine stays protected longer.
Key Features & BenefitsPart-synthetic 15W-40 heavy-duty diesel engine oil for modern commercial vehicles and equipment
Formulated with SYSTEM PRO TECHNOLOGY™ to deliver a 45% extra performance reserve* that:
Helps control oxidation
Reduces harmful deposits
Neutralizes corrosive acids
Adapts to higher temperatures to help maintain viscosity and protection under heavy loads
Provides longer useful oil life, giving confidence to run maximum drain intervals (with used oil analysis)
Certified CO₂-neutral, according to the internationally applicable PAS 2060 standard
Suitable for mixed fleets requiring 15W-40 CK-4 or CJ-4 and earlier
Meets or exceeds:
API CK-4
JASO DH-2
CAT ECF-3
Cummins CES 20086
DDC DFS 93K222
Deutz DQC III-10 LA
Ford WSS-M2C171-F1
Mack EOS-4.5
RVI RLD-4
Volvo VDS-4.5
* The 45% extra performance reserve is the average of the percentages by which Castrol VECTON exceeds industry standard requirement limits in API CK-4 and ACEA E9-16 engine tests for viscosity maintenance, heat protection, deposit control, minimum oil limits, and acid neutralization (in API CK-4 tests only).
Note: Extending oil drain intervals should only be done together with a comprehensive used oil analysis program, such as Castrol Labcheck.
Shipping: Items will ship via USPS, FedEx or UPS. We are unable to guarantee a specific carrier, even if one is selected or shown at checkout. We will ship via the carrier that has less days in transit to your destination.
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