Sign up for email
Search
For a better experience please use a browser other than your current version of Internet Explorer. Help on switching browsers can be found online.
All website features may not be available based upon your cookie consent elections. Click here to update settings.

Mobil Delvac™ Extreme 15W-40

Synthetic diesel engine oil

Mobil Delvac™ Extreme 15W-40 diesel engine oil with CK-4 identifier
Mobil Delvac™ Extreme 15W-40 is a synthetic, high-performance diesel engine oil that helps extend engine life while providing long drain capability for modern diesel engines operating in extreme conditions. It is recommended for use in a wide range of heavy-duty applications and operating environments found on- and off-highway, including engines operating under heavy loads.

Fully backward compatible, Mobil Delvac Extreme 15W-40 engine oil delivers exceptional performance in both newer and older heavy-duty engines. Its boosted formulation provides:

• Exceptional oxidation stability*
• Extended oil drain interval (ODI) potential up to 2X the average OEM ODI recommendation†
• 46 percent more antioxidant and 44 percent more anti-wear additive than Mobil Delvac™ 1300 Super
• Excellent soot and viscosity control

Mobil Delvac Extreme 15W-40 engine oil delivers updated high-temperature performance under the extreme operating environments found in the trucking, mining, construction and agricultural industries. Accordingly, this oil meets or exceeds the requirements of API CK-4, CJ-4, CI-4 PLUS, CI-4 and CH-4 service categories, as well as key original equipment manufacturer (OEM) requirements.

Mobil Delvac Extreme 15W-40 diesel engine oil is recommended by ExxonMobil for use in:
• Modern, high-performance diesel engines with exhaust gas recirculation (EGR), after treatment systems with diesel particulate filters (DPFs) and diesel oxidation catalysts (DOCs)
• Naturally aspirated and turbocharged, diesel-powered engines
• On-highway light- and heavy-duty trucking, including mixed fleets
• Off-highway industries, including mining, construction, quarrying and agriculture
 
*Based an analysis of Volvo T-13 engine test results.
†Based on US engine manufacturers’ (OEM) average oil drain intervals (ODI) API CK-4 / API FA-4 recommendation. Results vary based on vehicle/engine condition, driving and environmental conditions. Consult OEM or ExxonMobil before implementing extended ODIs, especially if the equipment/vehicle is under warranty.
 
Ask technical

Features and Benefits

Mobil Delvac Extreme is formulated with synthetic basestocks and a boosted additive system tailored to deliver extended performance for up to two times beyond OEM recommended oil drain intervals1. The proprietary formulation delivers excellent wear protection, exceptional oxidation stability2, and outstanding TBN retention. Mobil Delvac Extreme also provides outstanding resistance to oil consumption, oxidation, corrosive and abrasive wear, and high temperature deposits.

 

Mobil Delvac Extreme 10W-30 has the potential to improve fuel economy2.

 

Features

Advantages and Potential Benefits

Exceptional oxidation stability3

Superior performance in extreme conditions and extended ODI service

Excellent soot and viscosity control

Greater engine efficiency, long engine life and long oil life

Excellent oil consumption control

Lower oil costs due to less make-up oil during operation

Outstanding TBN reserves

Corrosion protection and extended drain intervals for both new and old engines using up to 500 ppm sulfur diesel fuel

Low temperature fluidity and pumpability

Formulated for smooth starting in cold weather

Resistance to corrosive and abrasive wear

Long life of critical wear surfaces

Component compatibility

Long gasket and seal life

Meets demanding specifications of key diesel OEMs

One engine oil for mixed diesel fleets

Low ash formulation meeting API CK-4 and CJ-4 requirements

Long emissions aftertreatment life (DPF, DOC and SCR)

  

1 Results may vary based on vehicle/engine condition, driving and environmental conditions Consult OEM or ExxonMobil before implementing extended ODIs.

 

2 Compared to an SAE 15W-40 conventional engine oil. Savings are dependent on vehicle engine type, outside temperature, driving conditions, and your current engine oil viscosity.

 

3 Based on performance in the Volvo T-13 engine test.

 

Applications

•Recommended for the latest heavy duty diesel engines operating in extreme conditions, including those equipped with aftertreatment systems and EGR.

  • Recommended for diesel applications using older and naturally aspirated conventional designs.

  • On-highway heavy-duty trucking and off-highway applications including trucking, mining, construction, agriculture and marine.

  • On-highway applications operating in both high speed/high load and short haul pick-up/delivery service.

  • Off-highway applications operating in severe low speed/heavy load conditions using up to 500 ppm sulfur fuels.

  • Diesel-powered equipment from American, European and Japanese OEMs.

 

Specifications and Approvals

This product has the following approvals:

MOBIL DELVAC EXTREME 10W-30

MOBIL DELVAC EXTREME 15W-40

Allison TES-439

 

X

Detroit Fluids Specification 93K218

X

X

Detroit Detroit Fluids Specification 93K222

 

X
Ford WSS-M2C171-F1
   X

Mack EO-O Premium Plus

X

X

MACK EOS-4.5

X

X

MAN M 3575

X

X

MB-Approval 228.31

 

X

MTU Oil Category 2.1

 

X

RENAULT TRUCKS RLD-3

X

X

VOLVO VDS-4

X

X

VOLVO VDS-4.5

X

X

 

This product meets or exceeds the requirements of:

MOBIL DELVAC EXTREME 10W-30

MOBIL DELVAC EXTREME 15W-40

API CH-4

X

X

API CI-4

X

X

API CI-4 PLUS

X

X

API CJ-4

X

X

API CK-4

X

X

API SL

 

X

API SM

 

X

JASO DH-2

X

X

ACEA E7

X

X

ACEA E9

X

X

CATERPILLAR ECF-3

X

X

Cummins CES 20081

X

X

Cummins CES 20086

X

X

 

Properties and Specifications

Property

MOBIL DELVAC EXTREME 10W-30

MOBIL DELVAC EXTREME 15W-40

Grade

SAE 10W-30

SAE 15W-40

Ash, Sulfated, mass%, ASTM D874

1

1

Cold-Cranking Simulator, Apparent Viscosity @ -20 C, mPa.s, ASTM D5293

 

6100

Cold-Cranking Simulator, Apparent Viscosity @ -25 C, mPa.s, ASTM D5293

6600

 

Density @ 15 C, g/ml, ASTM D1298

0.867

0.872

Flash Point, Cleveland Open Cup, °C, ASTM D92

219

221

Hi-Temp Hi-Shear Viscosity @ 150 C 1x10(6) sec(-1), mPa.s, ASTM D4683

3.6

4.1

Kinematic Viscosity @ 100 C, mm2/s, ASTM D445

11.8

14.3

Kinematic Viscosity @ 40 C, mm2/s, ASTM D445

81.1

107.4

Mini-Rotary Viscometer, Apparent Viscosity, -30 C, mPa.s, ASTM D4684

18400

 

Mini-Rotary Viscometer, Yield Stress, -25 C, Pa, ASTM D4684

 

16900

Pour Point, °C, ASTM D97

-42

-33

Total Base Number, mgKOH/g, ASTM D2896

10.3

10.3

Viscosity Index, ASTM D2270

140

140

 

Health and Safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx

  • Heavy-duty-lubricant-faq

    Heavy-duty lubricants FAQs

    Read our Mobil Delvac™ and Mobil Delvac 1™ product-related frequently asked questions.

    Learn more
  • Mobil Delvac Distributor Locator on Tablet

    Heavy-duty lubricant distributor locator

    Use our locator tool to find out where to buy Mobil Delvac™ products in your area.

    Find now