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Mobil Delvac 1 5W-40 

Mobil Delvac 1™ 5W-40

Mobil Delvac 1 5W-40 is a fully synthetic supreme performance heavy duty diesel engine oil that helps extend engine life while providing long drain capability and fuel economy for modern diesel engines operating in severe applications. Mobil Delvac 1 utilizes state-of-the-art technology to deliver exceptional performance in modern low emission engines, including refrigerated units, as well as older, well-maintained engines. Mobil Delvac 1 5W-40 is recommended for use in a wide range of heavy-duty applications and operating environments found in the on-road transport and off-road mining, construction, and agricultural industries. Mobil Delvac 1 also meets the requirements of the API SL specification for gasoline engines used in mixed fleets.

The unequalled performance of Mobil Delvac 1 5W-40 is the result of extensive cooperative development work with major equipment builders and application of the latest lubrication technology. As a result, this product meets or exceeds the requirements of the latest API, ACEA, JASO, and Global industry specifications for diesel engine oils, as well as the requirements of virtually all major American, European, and Japanese engine manufacturers.

Many modern, low emission diesel engines generate more soot and operate at higher temperatures than older engines. This significantly increases the need for high performance lubricants. Current tighter engine designs reduce oil consumption, resulting in less fresh oil makeup to replenish depleted additives. Top piston rings are located higher, bringing the oil film closer to the combustion chamber and exposing the lubricant to severe thermal stresses. Mobil Delvac 1 5W-40 maintains outstanding performance at high temperatures. It is also fully compatible with conventional oils. The key benefits include:

Meets or exceeds demanding specifications of major OEMsOne engine oil for mixed fleet operations
Outstanding thermal and oxidation stabilityControl of low temperature sludge build-up and high temperature deposits
Low volatility, excellent wear and bore polish controlGood oil consumption control
Expertly formulated low viscosity formulationFuel economy potential(1)
Exceptional low temperature pumpabilityEasier engine start-up and reduced wear
Good resistance to corrosionHelps towards long life of critical wear surfaces
Long drain capabilityHelp towards operational efficiency and overall cost control
Component compatibilityLong gasket and seal life, extended service intervals

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

Mobil Delvac 1 5W-40 is recommended for use in all super high performance diesel applications, including modern low emission engine designs with Exhaust Gas Recirculation (EGR). These applications include the following:

  • On-highway engines operating in both high speed/high load and stop-and-go conditions
  • Off-highway engines operating in severe low speed/heavy load conditions
  • Virtually all diesel powered equipment from American, European, and Japanese equipment builders
  • High performance gasoline engines and mixed fleets
  • Refrigeration units

API CI-4 PLUS/CI-4/CH-4/SL/SJX
ACEA E7/E4X
Cummins CES 20078/20077/20076/20075X
Ford WSS-M2C171-DX
Renault Trucks RXDX
Global DHD-1X
JASO DH-1X

Detroit Fluids Specification 93K214X
Mack EO-N Premium Plus 03, EO-M PlusX
MB-Approval 235.28X
MB-Approval 228.5X
Scania LDFX
Voith Retarder Oil Class BX
Volvo VDS-3, VDS-2X

ACEA E5/E3X
API CG-4/CF-4/CFX
Caterpillar ECF-1X
Cummins CES 20072/20071X

SAE Grade5W-40
Viscosity, ASTM D 445 
cSt @ 40ºC102
cSt @ 100ºC14.8
Viscosity Index, ASTM D 2270151
Sulfated Ash, wt%, ASTM D 8741.35
Total Base #, mg KOH/g, ASTM D 289612
Pour Point, ºC, ASTM D 97-45
Flash Point, ºC, ASTM D 92226
Density @ 15ºC kg/l, ASTM D 40520.854