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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

FeaturesAdvantages and Potential Benefits
Excellent oxidation and thermal stabilityKeeps engines clean and extends oil life
Good rust and corrosion preventionLong engine and component life



     Recommended by ExxonMobil for use in:


Specifications and Approvals

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


Typical Properties

Mobil Delvac 1240 
SAE Grade40
Viscosity, ASTM D 445 
cSt @ 40ºC158
cSt @ 100ºC15.5
Viscosity Index, ASTM D 227099
Sulfated Ash, wt%, ASTM D 8740.8
Total Base # , mg KOH/g, ASTM D 28967.1
Pour Point, ºC, ASTM D 97-21
Flash Point, ºC, ASTM D 92247
Density @ 15ºC kg/l, ASTM D 40520.90


Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.

Mobil, Delvac, the Mobil logotype and Pegasus design are trademarks of Exxon Mobil Corporation, or one of its subsidiaries. 


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