Mobil Delvac Ultra™ 5W-40 Ultimate Protection V1

Mobil commercial-vehicle-lube , France

Ultra-High Performance Diesel Engine Oil

Product Description

Mobil Delvac Ultra 5W-40 Ultimate Protection v1 is an ultimate full synthetic high performance heavy duty diesel engine oil with low Ash formula that helps extend engine life while providing long drain capability(1) and potential fuel economy(2) for modern and latest diesel engine technology operating in severe applications. This product is formulated to deliver exceptional performance in Latest, modern and older, hardworking, engines, including those with emission control systems. Mobil Delvac Ultra 5W-40 Ultimate Protection v1 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, forestry, construction, and agricultural industries.

The outstanding performance of Mobil Delvac Ultra 5W-40 Ultimate Protection v1 is the result of extensive cooperative development work of ExxonMobil 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 and ACEA industry specifications for diesel engine oils, as well as the requirements of many major American, and European engine manufacturers.


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

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


Features and Benefits

Mobil Delvac Ultra 5W-40 Ultimate Protection v1 is an outstanding lubricant solution for modern and latest engine technology equipped with emission after-treatment. It was developed by ExxonMobil to maintain unsurpassed oxidation stability (3) while also delivering exceptional low temperature fluidity and pumpability for smooth starting in cold down to -35°C. This feature, in combination with the sophisticated additive system, ensures exceptional engine wear performance and supports long engine life. The low ash formulation protects at the same time all exhaust after-treatment devices to maintain cleaner air requirements. The advanced engine cleanliness performance prevents deposits and keeps the engine running like new for long and efficient engine life.


(3) Based on PC-11 industry test data.



Advantages and Potential Benefits

Excellent low temperature pumpability

Reliable engine start and wear protection at low temperatures

Step out wear protection

Reduced engine wear to promote long engine life

Unsurpassed oxidation stability(3)

Long oil drain intervals and prevention of deposits

Superb resistance to corrosion

Protection of critical engine surfaces in humid environments

Expertly formulated low viscosity formulation

Fuel economy potential (2)



Recommended by ExxonMobil for use in:

     •  Most engine generations up to latest and most sophisticated high performance diesel engines with turbo-charger, direct injection and low emission designs, featuring all types of exhaust after-treatment technology

     •  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

     •  Most diesel powered equipment from American and European equipment builders

     •  High performance gasoline engines and mixed fleets


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


Specifications and Approvals


This product has the following approvals:

Detroit Fluids Specification 93K218

Detroit Detroit Fluids Specification 93K222


MB-Approval 228.31

MTU Oil Category 2.1




This product meets or exceeds the requirements of:









Caterpillar ECF-3

Cummins CES 20081

Cummins CES 20086



ISUZU DEO (w/ DPD Equipped Vehicles)


Properties and Specifications




SAE 5W-40

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


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


Cold-Cranking Simulator, Apparent Viscosity @ -30 C, mPa.s, ASTM D5293


Mini-Rotary Viscometer, Apparent Viscosity, -35 C, mPa.s, ASTM D4684


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


Viscosity Index, ASTM D2270


Ash, Sulfated, mass%, ASTM D874


Total Base Number, mgKOH/g, ASTM D2896


Pour Point, °C, ASTM D97


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



Health and safety

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

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.


Esso Société Anonyme Française
20 rue Paul Héroult
92000 Nanterre, France

Société Anonyme au capital de 98 337 521,70 euros

RCS Nanterre 542 010 053

You can always contact our Technical Help Desk engineers on Mobil lubricants and services related questions:

Tel. +33 (0)1 49 67 90 00

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification.  Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations.  The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit 
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.