Translation. Region: Russian Federation –
Source: Rosneft – An important disclaimer is at the bottom of this article.
Rosneft motor oil has received approval from Russian Railways for use in diesel locomotive engines. It is planned for use in rolling stock on the Kaliningrad-Sakhalin railway.
The conclusion was issued by a key Russian railway company following a series of tests and trials of Rosneft M-14D2U oil with its own Kompleksal-7321A additive package, conducted jointly with RN-Lubricants, the operator of Rosneft's lubricants business.
Tests were conducted on 3,600 horsepower diesel locomotives. The locomotives covered a total test mileage of approximately 480,000 km. Test results showed that Rosneft M-14D2U engine oil reduces wear in friction pairs and effectively dissipates heat, protecting locomotive engine systems from corrosion and mechanical wear, including under increased loads. Following the test runs, the oil had exhausted less than half of its intended service life, maintaining high alkaline and hydrogen numbers—the key indicators of detergent properties and additive performance. Diesel locomotives equipped with Rosneft engine oil demonstrated a reduction in specific fuel consumption of up to 1.7%.
The formula for Rosneft M-14D2U motor oils is specifically designed for locomotive operation in various climatic conditions and under heavy loads. The product's quality and performance characteristics have enabled Rosneft Lubricants to remain a key supplier of motor oils for Russian Railways' rolling stock for many years.
Reference:
RN-Lubricants LLC, a specialized subsidiary of Rosneft, develops new products, sells, and promotes the Company's lubricants. High-quality oils and additives are produced at seven Rosneft facilities. The company's lubricant portfolio includes over 1,000 products and meets the needs of both large industrial enterprises and private consumers.
Russian Railways JSC is the largest carrier on the Russian railway network, owning the world's third-longest railway network (over 85,500 km) and related infrastructure in Russia.
Department of Information and Advertising of PJSC NK Rosneft December 12, 2025
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