| AMSOIL Long Life Synthetic Gear Lubes are extended drain gear lubes engineered specifically to last several times longer and protect gears better than all conventional gear oils. These exclusive AMSOIL formulations of premium synthetic base oils and high performance additives resist acid, carbon and varnish formation from oxidative breakdown. Components run cleaner and last longer. AMSOIL Long Life Synthetic Gear Lubes are shear stable and friction reducing. They maintain their viscosity during extended service for maximum wear control and they are fuel-efficient. The superior cold temperature fluidity and high temperature stability properties of AMSOIL Long Life Synthetic Gear Lubes make them excellent for all-season use. Equipment lasts longer and maintenance costs are reduced with AMSOIL Long Life Synthetic Gear Lubes. Product Code: FGO 
Applications
AMSOIL Long Life Synthetic Gear Lubes, in the correct viscosity grades, are recommended for all domestic and foreign applications such as over-the-road trucks, light, medium and heavy duty trucks, off-road equipment, commercial vehicles, motor homes, autos, SUVs, emergency vehicles, busses, delivery/utility vehicles and tractors. AMSOIL Long Life Synthetic Gear Lubes provide: - High Load Gear and Bearing Protection
- Reduced Operating Temperatures
- Rust and Corrosion Protection
- Better Cold Weather Shifting
- Improved Efficiency
- Improved Seal Life
TYPICAL TECHNICAL PROPERTIES | AMSOIL Long Life Synthetic Gear Lube 80W-140 | | Kinematic Viscosity @ 100°C, cSt (ASTM D-445) | 26.6 | | Kinematic Viscosity @ 40°C, cst (ASTM D-445) | 268.9 | | Viscosity Index | 130 | | Brookfield Viscosity, cP (150,000 Max) | 52,734 @ -26°C | | Flash Point, °C (°F) (ASTM D-92) 150°C Min. | 212 (414) | | Pour Point, °C (°F) (ASTM D-97) | -40(-40) | | Copper Corrosion (ASTM D-130) 1b Max @ 121 °C (250°F) / 3hr | 1b | | Falex Procedure B (ASTM D-3233) (failure load, lbf.) | 1500 | | Foam Stability (ASTM D-892) (20/50/20 maximum) | 0/0/0 |
For product service life in differentials, consult your owner's manual or the Original Equipment Manufacturer (OEM) to establish the application, NORMAL or SEVERE. | | NORMAL | SEVERE | | Cars, SUV, Light & Medium Duty Trucks | Drain at 100,000 miles of service or according to the owner's manual, whichever is longer | Drain at 50,000 miles of service or according to the owner's manual, whichever is longer | | Heavy Duty Class, 8 Truck, Commercial Equipment | Follow the OEM drain interval (miles or hours) for synthetic oil up to 250,000 miles. Otherwise, drain at twice the OEM interval for conventional oil. | Follow the OEM drain interval (miles or hours) for synthetic oil. Otherwise, drain at twice the OEM |
For product service life in non-differential applications, consult owner's manual or the OEM for either normal or severe synthetic oil service intervals. Where service intervals are unavailable, drain at twice the interval for conventional oil. AMSOIL LONG LIFE SYNTHETIC GEAR LUBES are compatible with conventional gear oils, however mixing oils reduces the benefits and nullifies the extended service life recommendations. AMSOIL LONG LIFE SYNTHETIC GEAR LUBES are compatible with most limited slip differentials. If limited slip differential chatter occurs, add AMSOIL Slip-Lock™ friction modifier additive. AMSOIL LONG LIFE SYNTHETIC GEAR LUBE 80W-140 replaces competitors' 80W-140 and 85W-140 viscosity grades. 
Note: AMSOIL does not support extended drain intervals where water contamination occurs. Check and service the gear oil frequently when water contamination is possible. Gear oils should be changed more frequently when operating vehicles or equipment in dusty or dirty conditions unless the gear system is properly sealed and equipped with membrane type breathers. |
