Castrol® CRB Multi 15W-40 CK-4 is a synthetic blend, multi-purpose heavy-duty diesel engine oil designed to provide superior protection for modern and older diesel trucks, buses, and off-road equipment. This versatile 15W-40 diesel engine oil meets the strict requirements of the latest engine oil specifications and can be used where API CK-4, CJ-4, and earlier categories are required. It’s engineered to help deliver long, healthy engine life, giving you peace of mind that your diesel engines are protected across a wide range of applications and duty cycles.
Ideal for mixed fleets, Castrol CRB Multi 15W-40 helps keep engines cleaner, supports reliable performance, and reduces wear in heavy-duty and commercial vehicles.
Key Features & Benefits:
Synthetic blend 15W-40 heavy-duty diesel engine oil for trucks, buses, ag, and construction equipment
Versatile formulation suitable for a wide range of heavy-duty and commercial vehicles—perfect for mixed fleets
Special detergent and dispersant package helps keep engines cleaner for more reliable protection and longer engine life
Protection against oil thickening and deposit build-up in critical engine parts
Strong protection from wear and deposits to help maintain power and durability
Improved shear stability and resistance to viscosity loss for consistent engine protection over the drain interval
Versatile use supports product rationalization for workshops and fleet operators (fewer different oils to stock)
Specifications & Approvals:
Meets:
API CK-4
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
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.
Return Policy:
Cancellation Policy: