Behind these exciting moments, such as fighter jets soaring in the sky, tanks galloping in the Gobi Desert, and ships setting sail, there are some "silently dedicated" special oils that are ensuring the smooth operation of military equipment in extreme environments. The "protective magic" of special oils comes from their customized and precise formulas. If ordinary oil is a "universal nutrient solution" suitable for many equipment, then special oil is a "targeted functional agent" formulated to adapt to various extreme working conditions. Special oil is usually based on refined synthetic base oil, and then combined with precise proportioning additives with anti-oxidation, anti-wear, anti rust and other functions to achieve the goal of "accurately matching the strict requirements of military equipment operation". In the aviation industry, special oils are often used for some joints. The speed of fighter jet turbine blades can reach tens of thousands of revolutions per minute at high temperatures, thanks to the use of specialized turbine oil. Specialized turbine oil combines high-temperature oxidation resistance and precision lubrication functions. Some specialized turbine oils can function normally in the high temperature range of -40 ℃ to 220 ℃ in the cabin, ensuring engine life and flight safety. The role of military aviation hydraulic oil is equally significant. It can achieve millisecond level precise transmission of power over a wide temperature range, ensuring efficient completion of key actions such as landing gear retraction and wing surface adjustment in fighter jets. The smooth operation of other military equipment also relies on the hardcore support of special oil. In some desert areas, the transmission system of tanks needs to face temperature differences ranging from -35 ℃ to 60 ℃. In this case, special oil comes in handy. Some specialized lubricants have a pour point as low as -51 ℃ and can maintain stable viscosity over a wide temperature range, reducing transmission system wear like "joint lubricants". For ships carrying out ocean voyages, specialized rust and corrosion resistant oil is essential. This special oil can form a dense protective film, resist salt spray corrosion and marine life attachment, and extend the life of the ship. The hydraulic oil of missile launch vehicles has a unique ability to withstand complex impacts, and even if the load changes suddenly, it will not "fall off the chain", which is an important guarantee for precise missile launch. Overall, each type of military special oil has undergone multiple rounds of rigorous testing and practical verification, embodying the hard work of researchers. Although they are not easily exposed, they have been silently exerting their efforts to help equipment release their effectiveness in a "silent and nourishing" way, making them truly the "alternative blood" of military equipment. (New Society)