Mobil Delvac 1™ LE 5W-30

Synthetic Heavy-Duty Diesel Engine Oil

Mobil Delvac 1™ LE 5W-30 is a synthetic, heavy-duty diesel engine oil that combines advanced engine protection for modern low emissions vehicles with enhanced fuel economy potential1 and other sustainability-related benefits such as engine durability, emissions system protection and extended drain capability.

Mobil Delvac 1™ ESP 5W-30 utilizes state-of-the-art technology to deliver exceptional performance and is well suited for an extensive array of diesel-powered commercial vehicles for both on- and off-highway use in industries such as transportation, mining, construction and agriculture. Mobil Delvac 1™ ESP 5W-30 meets or exceeds an extremely broad range of industry and manufacturer specifications from around the world.

Equipment lubricant recommendations

Our Mobil Serv℠ Product Selector tool will help you identify lubricant(s) for your specific equipment.

Data sheets

Features and Benefits

High output, low emissions engines significantly increase demands on engine lubricants. Tighter engine design reduces oil consumption, resulting in less fresh oil makeup to replenish depleted additives. Thermal stresses on the lubricant are increased with the use of inter-coolers and turbochargers. Higher fuel injection and cylinder pressures and retarded timing improve burn efficiency, but also increase engine temperatures, volatility, and soot loading of the oil. The advanced technology in Mobil Delvac 1™ ESP 5W-30 delivers exceptional performance in these severe conditions while protecting emissions systems.

Features Advantages and Potential Benefits
Advanced Wear Protection Engine Durability
Enhanced Fuel Economy Potential1 Reduced Fuel Consumption
Extended Drain Interval Capability Fewer Oil Changes and Less Oil Disposal
Emissions System Protection Emissions System Durability and Performance
Excellent Low Temperature Performance Easier Starting in Cold Weather

1 Relative to conventional 15W-40 engine oil - Actual fuel economy improvement is dependent on vehicle/equipment type, outside temperature, driving conditions and your current fluid viscosity.


  • Heavy Duty Diesel Engines including Euro V/VI and US EPA 2007/2010 Modern Low Emissions Vehicles, Utilizing Technologies such as Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR), Continuously Regenerating Traps (CRT), Diesel Oxidation Catalysts (DOC) and Exhaust Gas Recirculation (EGR)
  • Heavy Duty Diesel Engines using low sulfur diesel fuels and many biodiesel fuel formulations
  • Naturally Aspirated and Turbo-Charged Diesel Powered Equipment
  • On-Highway Short-Haul and Long-Haul Trucks and Buses
  • Off-Highway Mining, Construction and Agricultural Equipment

2 Please refer to the owners handbook for OEM application requirements and oil drain intervals for your vehicle or equipment.

Specifications and Approvals

Mobil Delvac 1™ LE 5W-30 meets or exceeds the requirements of: 5W-30
Caterpillar ECF-3 X
Cummins CES 20081 X
DAF Extended Drain X
Ford WSS-M2C171-E X
Scania Low Ash

Mobil Delvac 1™ LE 5W-30 has the following builder approvals: 5W-30
MB-Approval 228.51 X
MB-Approval 228.31 X
MAN M 3677 X
MAN M 3477 X
MAN M 3271-1 X
Volvo VDS-4 X
Volvo VDS-3 X
Voith Retarder Oil Class B X
Deutz DQC IV-10 LA X
Detroit Fluids Specification 93K218 X
Mack EO-O Premium Plus X
MTU Oil Category 3.1 X
Renault Truck RLD-3 X
Renault Truck RLD-2 X
Scania LDF-4
Avtodisel YaMZ-6-12
Mobil Delvac 1™ LE 5W-30 is recommended by Imperial Oil for use in applications requiring: 5W-30
Renault Truck RGD X
Renault Truck RXD X

Typical Properties

Mobil Delvac 1™ LE 5W-30
SAE Grade 5W-30
Viscosity, ASTM D 445
cSt @ 40ºC 69
cSt @ 100ºC 11.8
Viscosity Index, ASTM D 2270 168
Sulfated Ash, wt%, ASTM D 874 1
Total Base #, mg KOH/g, ASTM D 2896 10
Pour Point, ºC, ASTM D 97 -51
Flash Point, ºC, ASTM D 92 234
Density @ 15ºC, kg/l, ASTM D 4052 0.855

Health and Safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @