Mobil Delvac 1600 Monogrades  

Mobil Commercial Vehicle Lube, Italy

Heavy Duty Diesel Engine Oils

Product Description

Mobil Delvac 1630 and 1640 are extra high performance diesel engine oils formulated from advanced base oils and a balanced additive system to meet or exceed the demanding specifications of the world’s leading builders of modern diesel engines. They are recommended by ExxonMobil for use in European and Japanese-designed intercooled, highly turbocharged engines operating under the most severe on and off-highway conditions.


Features and Benefits

Today’s low emission engines place increasing demands on engine lubricants. Tighter engine designs reduce oil consumption, resulting in less fresh oil make-up to replenish depleted additives. Higher piston top ring positioning brings the oil film closer to the extreme combustion temperatures increasing thermal stress on the lubricant. Higher fuel injection pressure and retarded timing improve burn efficiency, but also increase engine part loading, temperatures, and soot in the oil. The advanced technology in Mobil Delvac 1630 and 1640 provides exceptional performance in both modern diesel engines as well as older models. The key benefits include:

Features Advantages and Potential Benefits
Outstanding protection against oil thickening, high temperature deposits, sludge build-up, and oil degradation Outstanding control of high temperature deposits
Extended oil life above OEM recommended Oil Drain Intervals(ODI)
Excellent protection against ring sticking
Exceptional wear protection Reduces maintenance costs and extends engine life
Excellent soot handling capabilities Maintains viscosity control and reduces wear



      Recommended by ExxonMobil for use in:

  • Diesel-powered equipment from leading diesel engine manufacturers
  • On-highway light and heavy-duty trucking
  • Off-highway industries including: construction, quarrying, and agriculture
  • Mixed diesel and gasoline fleets


Specifications and Approvals

Mobil Delvac 1600 Monogrades meet or exceed the following industry and builder specifications: 1630 1640


Mobil Delvac 1600 Monogrades have the following builder approvals: 1630 1640
MTU Oil Category 2 X X
GE 250MDA/B (V or L)   


Mobil Delvac 1600 monogrades are also recommended by ExxonMobil for use in applications requiring: 1630 1640
Allison C-4 X  
MAN 270


Typical Properties

Mobil Delvac 1600 Monograde 1630 1640
SAE Grade 30 40
Viscosity, ASTM D 445    
cSt @ 40ºC 90 132
cSt @ 100ºC 11.5 14.7
Viscosity Index, ASTM D 2270 117 112
Sulfated Ash, wt%, ASTM D 874 1.4 1.4
Total Base #, mg KOH/g, ASTM D 2896 12 12
Pour Point, ºC, ASTM D 97 -30 -21
Flash Point, ºC, ASTM D 92 250 256
Density @ 15ºC kg/l, ASTM D 4052 0.89 0.89


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.

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


Esso Italiana s.r.l.
Via Castello della Magliana  25
00148, Roma, Italia


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.