About This

• DOC'S DIESEL HEAVY DUTY DIESEL OIL – Doc's Diesel 5W-40 Full Synthetic Heavy Duty Diesel Oil is engineered for modern diesel engines, delivering excellent wear protection and performance in severe conditions. Suitable for both new emissions-compliant rigs and older engines, it resists oxidation, controls viscosity, reduces oil use, and boosts durability. Made with premium synthetic base oils and CK-4 additives, it performs across extreme conditions, including EGR and DPF systems.
• PRODUCT DETAILS – Formulated for durability and reliability, this oil delivers excellent oxidation and thermal stability, reducing deposits in high-stress conditions. Its all-weather performance ensures fast cold-start protection, while stay-in-grade shear stability keeps viscosity under heavy loads and high heat. Optimized for 2017 GHG-compliant diesel engines, it supports lower emissions, better fuel economy, and dependable performance on- or off-highway.
• SPECIFICATIONS: Meets or Exceeds Major Specs API CJ-4/CK-4. SN and backwards compatible with CI-4, CI-4 Plus, CI-4, CH-4. Cummins CES 20086, DEUTZ DQC III-10 LA, Mack EOS 4.5, Renault VI RLD-4, Volvo VDS-4.5, ACEA E6/E9, Allison TES-439, Caterpillar ECF-3, Detroit Fluids Specification (DFS) 93K222, MAN M 3575, MB 228.51, MB 228.31, MTU Category 3.1
• REPLACEMENT GUIDELINES - Above all recommendations, change according to your vehicle’s manufacturer warranty. For Standard Service (normal duty), Engine Oil should be changed every 10,000 miles or 15,000 miles maximum. For Severe Service (heavy loads, towing, dusty or extreme conditions), it should be changed every 7,500 miles or 10,000 miles maximum. For Off-Road / Agricultural / Equipment, follow manufacturer guidelines (typically 250 – 500 hours).
• DOC’S DIESEL FILTERS - Doc’s is the new standard in aftermarket replacement filters, setting benchmarks for quality and reliability in the industry! Based in Northwest Ohio, our premium line includes engine air, cabin air, oil, and fuel filters, all engineered to meet or exceed OEM standards. We're a grassroots company dedicated to delivering exceptional value and unmatched commitment to our customers. Choose Doc's for superior performance, durability, and peace of mind for your vehicle.

Overview

• Viscosity : 5W40
• Brand : Doc's Diesel
• Vehicle Service Type : Truck
• UPC : 810180349659
• Manufacturer : Doc's Diesel
• Liquid Volume 1 Gallons : Package Information Bottle
• : Liquid Volume 1 Gallons
• : Package Information Bottle