Indian Oil Corporation (IndianOil) has supplied specialised Xtreme Weather Grade (XWG) diesel to Indian Army units in the Northeast, strengthening fuel availability for military vehicles and equipment operating in some of the country's harshest high-altitude environments.
The indigenously developed fuel is designed to remain effective at temperatures as low as minus 42 degrees Celsius, addressing operational difficulties associated with conventional diesel in extreme winter conditions.
The initiative forms part of IndianOil's collaboration with the Indian Army to ensure reliable fuel supplies for troops deployed along strategically important frontier regions, particularly in Sikkim and Arunachal Pradesh.
The specialised diesel is intended to improve vehicle mobility, operational readiness and logistical reliability during severe winters, when freezing temperatures can affect the performance of conventional fuels.
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XWG diesel has been developed to overcome the limitations of conventional high-speed diesel in freezing conditions.
At extremely low temperatures, wax crystals can form in ordinary diesel, restricting fuel flow and clogging filters. This can make engines difficult to start and disrupt vehicle operations.
The specialised formulation is designed to maintain fuel performance under such conditions, allowing military vehicles and equipment to function more reliably.
The fuel meets Bharat Stage-VI emission standards and IS 1460:2025 specifications and can be used in the Army's existing vehicle fleet without requiring engine modifications.
Its low-temperature performance is particularly important for military operations in remote mountainous areas, where uninterrupted transport is essential for moving personnel, equipment and supplies.
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IndianOil expanded its XWG diesel supply network to the Army's Eastern Command following the dispatch of its first railway rake from the company's Panipat Marketing Complex in September.
The consignment was flagged off by Lieutenant General Mukesh Chadha, Director General Supplies and Transport and Senior Colonel Commandant at Army Headquarters.
The dispatch marked the extension of the specialised fuel's supply network beyond India's northern frontier to the eastern region.
With the expansion, IndianOil became the first public sector oil company to position XWG diesel in the eastern region, establishing a dedicated supply arrangement to meet the Army's requirements in Sikkim and Arunachal Pradesh.
The move is expected to support military logistics in areas where difficult terrain and extreme weather make dependable transportation particularly important.
๐๐ง๐๐ข๐ ๐๐ง๐จ๐ฎ๐ฌ ๐๐ฎ๐๐ฅ ๐ข๐ง๐ง๐จ๐ฏ๐๐ญ๐ข๐จ๐ง
The XWG diesel was formally launched in July 2026 by Chief of Army Staff General Dhiraj Seth.
Developed through collaboration between the Indian Army and oil marketing companies, the fuel represents an effort to produce specialised energy solutions domestically for demanding defence applications.
The Army has highlighted the potential of the fuel to improve operational availability and reduce difficulties associated with maintaining vehicles in freezing temperatures.
The technology also has potential civilian applications in high-altitude and severe winter regions, where conventional diesel-powered vehicles can encounter similar operational challenges.
๐๐ญ๐ซ๐๐ง๐ ๐ญ๐ก๐๐ง๐ข๐ง๐ ๐๐๐๐๐ง๐๐ ๐ฅ๐จ๐ ๐ข๐ฌ๐ญ๐ข๐๐ฌ
IndianOil's latest initiative builds on its earlier development of specialised fuels for the armed forces.
These include Winter Grade Diesel introduced in 2019, All Weather Grade Diesel in 2022 and Low Sulphur Low Aromatic Superior Kerosene Oil in the same year.
Each product was developed to address specific operational requirements of defence personnel and equipment deployed in challenging environments.
The expansion of XWG diesel supplies to the Northeast combines domestic fuel development with IndianOil's refining, marketing and distribution infrastructure.
By extending access to specialised fuel across both northern and eastern frontier regions, the initiative seeks to strengthen the Army's operational preparedness and reduce cold-weather disruptions to military transportation.
The development also supports India's broader objective of strengthening indigenous technological capabilities and reducing dependence on external solutions for specialised defence requirements.