The Indian Army has introduced an indigenously developed Xtreme Weather Grade (XWG) Diesel designed to improve the performance of military vehicles operating in extreme cold and high-altitude environments.
The specialized fuel was officially launched by Chief of the Army Staff General Dhiraj Seth in New Delhi on July 31. It was jointly developed by the Indian Army and India’s Oil Marketing Companies as part of efforts to enhance operational readiness while supporting the country’s Atmanirbhar Bharat (Self-Reliant India) initiative.
According to India’s Ministry of Defence, the new diesel remains operational at temperatures as low as -42°C, addressing a long-standing challenge associated with conventional diesel, which can thicken and clog fuel filters in severe winter conditions, reducing vehicle reliability.
The ministry said the fuel complies with BS-VI emission standards and IS 1460:2025 specifications and can be used across the Indian Army’s existing fleet without requiring engine modifications or re-certification.
During the launch ceremony, Gen. Seth described XWG Diesel as a significant indigenous innovation that will improve mobility, operational readiness and mission reliability in extreme environments. He noted that the fuel will eliminate measures previously required to keep vehicles operational during harsh winters, enhancing both safety and troop morale.
The Army chief also praised the collaboration between the Indian Army and the Oil Marketing Companies, highlighting that the fuel was developed within a year and expressing confidence that the partnership could lead to additional specialized fuels for future operational requirements.
Beyond military applications, the Ministry of Defence said the technology could also benefit civilian users in mountainous and cold-weather regions by improving the reliability and safety of vehicles and equipment operating in severe climatic conditions.