HEXOL ULTRAGEN 15W-40 is an extra high performance, low ash, VHVI Technology YUBASE multigrade engine oil, developed for commercial diesel generators fitted with the latest exhaust gas treatment equipment. It meets the requirements of a wide range of performance levels of the most outstanding engine manufacturers. This product is suitable for heavy-duty generators.

Exceeds API Service CI-4/SN

  • Provides reliable start-up and operation even at extremely low temperatures
  • Meets passenger car and light truck manufacturer’s requirements;
  • Lubricates, cools and protects engines that operate at high temperatures;
  • Protects the engine from corrosion, wear, rust, deposits, and varnish;
  • Provides reliable start-up and operation even at extremely low temperatures’
  • Suitable for commercial vehicles operating at low or high speeds, equipped with Exhaust Gas Recirculation (EGR), Diesel Oxidation Catalyst (DOC) or Diesel Particulate Filter (DPF), complying with Euro IV, Euro V and Euro VI emission requirements, where the manufacturer recommends oil with the above listed properties-compatible with diesel engines in railway, mining, construction, and agricultural machines.
  • Excellent rust, bearing corrosion, anti-corrosion and anti-wear properties.
Properties Unit Method Value
Specific Gravity @85 °F Kg/L ASTM D1298 0.8702
Kinematic Viscosity @100°C mm2/s ASTM D445 19.24
Kinematic Viscosity @40°C mm2/s ASTM D445 166.34
Viscosity Index _ ASTM D2270 132
Pour Point °C ASTM D97 -18
Total Base Number (TBN) mg KOH/g ASTM D2896 10.40
Flash Point °C ASTM D92 230
*These characteristics are typical for current stock available. Whilst future production will confirm to Hexol’s specification, variation in these characteristics may occur.


8L, 10L, 12L, 20L, 208L

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