Mobilube GX 80W-90, 140 are high performance, heavy duty gear lubricants formulated from high quality base oils and an advanced additive system. These lubricants are engineered for automotive heavy-duty transmissions, axles, and final drives where protection against wear and scoring is required. They are recommended by ExxonMobil for use in applications where API GL-4 service is required.

Mobilube™ GX 80W-90 Specifications

• Grade: SAE 140 / SAE 80W-90
• Density @ 15.6°C (g/ml, ASTM D4052): 0.91 (SAE 140) / 0.89 (SAE 80W-90)
• Flash Point (Cleveland Open Cup, °C, ASTM D92): 260 (SAE 140) / 240 (SAE 80W-90)
• Kinematic Viscosity @ 100°C (mm²/s, ASTM D445): 30.0 (SAE 140) / 14.5 (SAE 80W-90)
• Kinematic Viscosity @ 40°C (mm²/s, ASTM D445): 447 (SAE 140) / 135 (SAE 80W-90)
• Pour Point (°C, ASTM D97): -6 (SAE 140) / -33 (SAE 80W-90)
• Viscosity Index (ASTM D2270): 95 (SAE 140) / 104 (SAE 80W-90)