S-OIL seeks to maintain the cleanness of the engine, by combining the world’s most advanced clean additive with its gasoline and diesel that boast world-class cleanness and strong power. Through this effort, the Company launched S-Gasoline and S-Diesel, which have better quality than its previous Super Clean and Super Diesel series. S-Gasoline and S-Diesel, which enable the inside of the engine to stay clean, have a sulfur content of 10 ppm or less, so they can reduce the emission of noxious exhaust fumes significantly, prevent environmental pollution and protect even the health of drivers. By providing high-octane gasoline and high-cetane diesel for customers, S-OIL helps vehicles to maintain strong engine power. In addition, S-OIL contributes to the conservation of the environment by producing Clean Kerosene that won the Eco-Label for the first time among domestic petroleum products.

S-OIL possesses the first technology in Korea to produce Lube Base Oil. Premium Lube Base Oil and Super Lube Base Oil, produced with the recent procedure since 1981. The necessity of high quality base oil has increased with the strengthening of environmental regulations. Since 2002, the company develops and produces Ultra-S product that demonstrates a high viscosity index and superior oxidation stability. High performance and expansion of the lifespan of lubricant products through research and development are contributing to the protection of the environment

S-OIL maintains a higher upgrading facilities ratio than other domestic refiners. And the Bunker-C Cracking Center (BCC), which is called "ground oil field," is at the core of those facilities. S-OIL R&D Center carries out diverse activities to support the operation of the BCC.

• Performance evaluation of
  Catalysts used by the BCC
• Finding of optimum operating
  Conditions for the BCC
• Maximum production of
  High value-added products

In order to produce high-quality fuel oils and lubricants, the R&D Center also conducts research on the improvement of production processes. It helps the efficient operation of the Refinery by developing production technologies for the gasoline & diesel hydrodesulfurization unit, the lube base oil unit and the BTX unit.

• Research on Process improvement
  & Production technologies
• Support for the efficient Operation
  of the Refinery
• Production of high-quality fuel oils
  and lubricants

• Gasoline & DSL HDS Unit Core refining units
• BTX Unit Production of Benzene
  Toluene, Xylene,
  Para-Xylene
• Hydrocracker Selection and application of
  catalysts
• RFCC Unit Finding of optimum catalysts
  and operating conditions
  through RFCC-MAT

S-OIL Technical Research Center is undertaking studies using a Pilot Plant to execute various researches by minimizing the actual factory. Through the use of pilot plant equipment essential for the selection of a superior catalyst according to each process - including main processes of the crude oil dismantle facility - the company is contributing greatly in creating profit of S-OIL, while making the long-term operation and production of high quality products possible.

• Hydrocracker
• Hyvahl
• RFCC
• Lube
• A-Tower, V-Tower
• DSL HDS