South Korea’s third-biggest refiner, S-Oil, has signed a contract to supply a total of 3.1 trillion won ($2.66 billion) of refined oil products to Saudi Aramco’s trading arm, it said on Wednesday. A regulatory filing showed the firm will supply up to 10 million barrels of diesel, up to 15 million barrels of naphtha, up to 11 million barrels of jet fuel and up to 8 million barrels of gasoline ...