Mobil Delvac 1240 20L View larger

Mobil Delvac 1240 20L

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Mobil Delvac 1240 

Heavy Duty Diesel Engine Oils

Product Description

Mobil Delvac 1240 is a heavy duty, diesel engine oil formulated from high performance base oils and a balanced additive system of ashless dispersants, metallic detergents, and inhibitors to control oxidation, wear, corrosion, and rust.  It is used in a wide range of applications where a SAE 40 monograde lubricant is recommended including 2-cycle diesel applications (e.g. the Detroit Diesel's Series 53, 71, and 92 two-cycle engines).


Features and Benefits

Features Advantages and Potential Benefits
Excellent oxidation and thermal stability Keeps engines clean and extends oil life
Good rust and corrosion prevention Long engine and component life



     Recommended by ExxonMobil for use in:

  • Diesel powered equipment including 2-cycle applications
  • On highway light and heavy duty trucking
  • Off highway industries including: construction, mining, quarrying, and agriculture


Specifications and Approvals

Mobil Delvac 1240 is recommended by ExxonMobil for use in applications requiring: Mobil Delvac 1240


Typical Properties

Mobil Delvac 1240  
SAE Grade 40
Viscosity, ASTM D 445  
cSt @ 40ºC 158
cSt @ 100ºC 15.5
Viscosity Index, ASTM D 2270 99
Sulfated Ash, wt%, ASTM D 874 0.8
Total Base # , mg KOH/g, ASTM D 2896 7.1
Pour Point, ºC, ASTM D 97 -21
Flash Point, ºC, ASTM D 92 247
Density @ 15ºC kg/l, ASTM D 4052 0.90