Mobil Delvac MX 15W-40

Mobil Delvac MX 15W-40 is an oil with high performance characteristics for diesel engines, which provides effective lubrication of modern engines and helps to extend their service life. As a result, this product exceeds the requirements of almost all major European and American engine manufacturers or meets them. Its high performance properties have been proven in practice in a variety of industries and applications, including in mixed parks.

The improved formulation of this oil provides effective performance characteristics of both modern diesel engines with a low level of exhaust gas toxicity, and older engines running on low-sulfur or high-sulfur fuel. Mobil Delvac MX 15W-40 contains a mixture of high-quality base oils with a balanced composition of additives to control oil thickening due to the accumulation of diesel soot and high-temperature exposure, as well as to ensure oxidation resistance, corrosion protection and the formation of high-temperature deposits.

Features and Benefits

High-power, low-emission engines place increased demands on engine oils. Reducing the working gaps of the engines, the use of intercoolers and turbocharging leads to an increase in the thermal load on the oil. Engine emission reduction technologies, such as increased fuel injection pressure and delayed injection, require improvements in oil performance parameters such as oxidation resistance, soot dispersibility and evaporation. Mobil Delvac MX 15W-40 oil is produced on the basis of high-quality base oils and a balanced additive system to promote optimal performance of both modern diesel and gasoline engines and engines of older models.


Recommended by ExxonMobil for the following applications:

• equipment with naturally aspirated and turbocharged diesels from leading Japanese, European and American manufacturers

• road transportation by light and heavy cargo transport

• off-road vehicles used in construction, mining and agriculture

• mixed parks

Properties and characteristics

Class - SAE 15W-40

Sulphate ash content, % by weight, ASTM D874 - 1.1

Density at 15°C, kg/m3, ASTM D4052 - 0.87

Flash point in an open Cleveland Crucible, °C, ASTM D 92 - 225

Kinematic viscosity at 100°C, mm2/s, ASTM D445 - 14.6

Kinematic viscosity at 40°C, mm2/s, ASTM D445 - 110

Solidification temperature,°C, ASTM D97 - -36

Total Base Number, mg KOH/g, ASTM D 2896 - 9.2

Viscosity Index, ASTM D2270 - 136

Apparent viscosity in the Cold Scroll simulator (rotability) at -20°C, MPa*s, ASTM D5293 - 5800