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Mobil Delvac 1600 Monogrades

Mobil Commercial Vehicle Lube, United Kingdom

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) X


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

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