CAT 3E-9840 Diesel Engine Oil DEO 15W40 (208L)
Cat DEO™ is developed, tested and approved by Caterpillar to meet the same high standards as all Genuine Cat Parts. Cat® DEO can be used in diesel engines without aftertreatment devices. The 3E-9840 ensures optimal performance and durability. Designed for efficiency and longevity. An essential component for optimal machine performance. This 3E-9840 Diesel Engine Oil DEO Caterpillar 15W40 (208L) by Caterpillar is built to last.
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- Description
Description
CAT 3E-9840 Diesel Engine Oil DEO 15W40 (208L)
The CAT 3E-9840 Diesel Engine Oil DEO 15W40 (208L drum) is the official factory-fill oil for Caterpillar equipment. Developed, tested, and approved by Caterpillar, this premium lubricant is designed to deliver maximum performance, protection, and durability for heavy-duty diesel engines.
It is specifically recommended for engines without aftertreatment systems, providing excellent wear protection, engine cleanliness, and longer service intervals making it the ideal choice for construction, mining, power generation, and industrial applications.
Key Features & Benefits
Genuine Cat® Oil – Developed and approved by Caterpillar to meet strict OEM standards.
Extended Drain Intervals – Supports oil change intervals of up to 500 hours, reducing downtime.
Superior Wear Protection – Guards against engine wear, deposits, and sludge formation.
Thermal & Oxidation Stability – Maintains performance in high-temperature operations.
High Detergency & Dispersancy – Keeps engines clean and efficient.
Proven Performance – Tested to the same high standards as all Genuine Cat® parts.
Technical Specifications
Part Number: 3E-9840
Viscosity Grade: SAE 15W40
Volume: 208 Liters (sealed steel drum)
Oil Type: Premium mineral-based diesel engine oil
Drain Interval: Up to 500 hours (under Cat guidelines)
Application: Diesel engines without aftertreatment systems
Performance Standards & Approvals
The CAT DEO™ 15W40 (3E-9840) meets or exceeds the following international specifications:
API: CI-4, CH-4, SL, CG-4, CF-4, CF
Caterpillar: ECF-2
ACEA: E7, A2
Volvo: VDS-3
Mack: EO-M Plus
MAN: M 3275-1
Mercedes-Benz: MB 228.3
Cummins CES: 20077, 20076, 20072, 20071
Renault Trucks: RLD
Applications
The CAT 3E-9840 DEO 15W40 is engineered for heavy-duty diesel engines across multiple industries, including:
Construction Equipment – Excavators, bulldozers, wheel loaders, graders
Mining Machinery – Haul trucks, shovels, drills, loaders
Marine Engines – Continuous-duty applications in harsh marine environments
Power Generation – Diesel generator sets operating under heavy loads
Industrial & Transport Fleets – Reliable lubrication for demanding operations
Why Choose Genuine Cat® Engine Oil?
Using CAT 3E-9840 DEO 15W40 ensures:
Maximum protection and reliability for Caterpillar engines
Longer engine life and reduced total cost of ownership
Compliance with Caterpillar warranty requirements
Consistent performance in the harshest operating environments
Packaging Information
208 Liter sealed drum