Superior extreme pressure and heavy-load protection A high-concentration sulfur-phosphorus additive formula effectively forms an anti-wear chemical film, preventing scratches and pitting on gear surfaces even under high torque and impact loads (such as those found on construction machinery and heavy-duty truck rear axles), extending component life. Multi-metal compatibility and corrosion protection Corrosion inhibitors provide 360° protection against corrosion by moisture and acidic substances on various metals within , including steel, copper, and cast iron. This product is particularly suitable for harsh environments such as humid environments and mines. Excellent high-temperature stability Synthetic base oils combined with a high-temperature antioxidant complex ensure stable viscosity at temperatures between 80°C and 150°C, reducing sludge deposition caused by high-temperature oxidation and preventing oil film breakdown. All-season viscosity (e.g., 85W-90 or 80W-140 grades) Selected viscosity improvers ensure excellent fluidity at low-temperature starts and strong adhesion at high temperatures. Suitable for all-season use in both northern and southern regions, reducing seasonal oil change costs. Package: 1 pcs Heavy-duty gear oil