HD Hyundai Oilbank said Tuesday it has become the first company in South Korea to supply engine oil designed for hydrogen internal combustion engines to domestic commercial vehicle manufacturers, including Tata Daewoo Mobility. The company began developing its proprietary XTeer lubricant for hydrogen internal combustion engines, known as H2-ICEs, in 2023, and the product completed performance testing last year. To address these challenges, HD Hyundai Oilbank developed three core technologies — engine protection, moisture control and combustion deposit suppression. Meanwhile, HD Hyundai has also been expanding its hydrogen engine business, including plans announced by HD Hyundai Construction Equipment to mass-produce hydrogen engines for trucks. In line with that strategy, HD Hyundai Oilbank said it is strengthening its lubricant portfolio to support conventional internal combustion engines, H2-ICEs and electric vehicles.