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Mobil Delvac 1 LE 5W-30  

Mobil Delvac 1™ LE 5W-30

Fully Synthetic Heavy-Duty Diesel Engine Oil

Mobil Delvac 1™ LE 5W-30 is a fully 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 LE 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 LE 5W-30 meets or exceeds an extremely broad range of industry and manufacturer specifications from around the world.

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 LE 5W-30 delivers exceptional performance in these severe conditions while protecting emissions systems.


 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

1Relative 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 for 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

2Please refer to the owners handbook for the OEM application requirements for your vehicle or equipment

Mobil Delvac 1 LE 5W-30 meets or exceeds the requirements of: 5W-30
ACEA E6, E7, E9X
Caterpillar ECF-3X
Cummins CES 20081X
DAF Extended DrainX
Ford WSS-M2C171-EX

Mobil Delvac 1 LE 5W-30 has the following builder approvals: 5W-30
MB-Approval 235.28, MB-Approval 228.31, MB-Approval 228.51X
MAN M 3677, MAN M 3477, MAN M 3271-1X
Volvo VDS-4, Volvo VDS-3X
Deutz DQC IV-10 LAX
Detroit Fluids Specification 93K218X
Mack EO-O Premium PlusX
MTU Oil Category 3.1X
Renault Truck RLD-3, Renault Truck RLD-2X

Mobil Delvac 1 LE 5W-30 is recommended by ExxonMobil for use in applications requiring: 5W-30
Renault Truck RGD, Renault Truck RXDX

Mobil Delvac 1 LE 5W-30


SAE Grade


Viscosity, ASTM D 445


  cSt @ 40ºC


  cSt @ 100ºC


Viscosity Index, ASTM D 2270


Sulfated Ash, wt%, ASTM D 874


Total Base #, mg KOH/g, ASTM D 2896


Pour Point, ºC, ASTM D 97


Flash Point, ºC, ASTM D 92


Density @ 15ºC kg/l, ASTM D 4052