We use cookies to help personalise your web experience and improve our websites. To find out more about what cookies are, how we use them and how to delete them, see our Cookie Statement.

By continuing to use this site, you are consenting to the use of cookies.

  • A
  • A
  • A
  • text size

Mobil Delvac 1 5W-40 

Mobil Delvac 1™ 5W-40

Mobil Delvac 1 5W-40 is a fully synthetic high performance heavy duty diesel engine oil that helps towards long engine life while providing long drain capability for modern diesel engines operating in severe applications. Mobil Delvac 1 5W-40 delivers excellent 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 excellent performance of Mobil Delvac 1 5W-40 is the result of extensive cooperative development work with major equipment builders and application of advanced lubrication technology. As a result, this product meets or exceeds the requirements of some of the latest API, ACEA, JASO, and Global industry specifications for diesel engine oils, as well as the requirements of many 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:

FeaturesAdvantages and Potential Benefits
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 compatibility

Long gasket and seal life, extended service intervals

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

Mobil Delvac 1 5W-40 is recommended for use in 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
  • Refrigeration units

Mobil Delvac 1 meets or exceeds the requirements of: 5W-40
Cummins CES 20078/20077/20076 
Ford WSS-M2C171-D
Renault Trucks RXD
Global DHD-1

Mobil Delvac 1 5W-40 has the following builder approvals: 5W-40
Detroit Diesel Power Guard Oil Specification 93K214
Mack EO-N Premium Plus 03, EO-M Plus
MB-Approval 235.28
MB-Approval 228.5
Scania LDF
Voith Retarder Oil Class B
Volvo VDS-3, VDS-2

Mobil Delvac 1 5W-40 is recommended by ExxonMobil for use in applications requiring: 5W-40
Caterpillar ECF-1-a
Cummins CES 20072/20071/20075

Mobil Delvac 1 5W-40 
SAE Grade5W-40
Viscosity, ASTM D 445 
cSt @ 40ºC102
cSt @ 100ºC 14.8
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