Description
Mobil Delvac Legend 1640 is extra high-performance diesel engine oils formulated from advanced base oil and a balanced additive system to meet or exceed the demanding specifications of the world’s leading builders of modern diesel engines. It is 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 Legend 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 |
Applications
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
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Properties and Specifications
Property Grade SAE 40 Ash, Sulfated, mass%, ASTM D874 1.4 Density @ 15.6 C, g/cm3, ASTM D4052 0.892 Flash Point, Cleveland Open Cup, °C, ASTM D92 256 Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 14.1 Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 132 Pour Point, °C, ASTM D97 -21 Total Base Number, mgKOH/g, ASTM D2896 12 Viscosity Index, ASTM D2270 112
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