Shell Spirax S3 AS 80W-140
Shell Spirax S3 AS 80W-140 is a high-performance heavy-duty axle oil developed to deliver reliable lubrication and protection in demanding automotive drivetrain applications. Formulated using carefully selected base oils and advanced additive technology, the lubricant provides excellent wear protection, oxidation resistance and corrosion control for heavily loaded gear systems. The oil is designed for use in modern axle units operating under severe load conditions, helping maintain drivetrain reliability and performance across a wide range of operating environments.
One of the key advantages of Shell Spirax S3 AS 80W-140 is its strong protection against wear and gear surface damage. The lubricant incorporates advanced extreme-pressure additives that form a durable protective film between gear surfaces. This protective film helps prevent metal-to-metal contact in heavily loaded hypoid gears, reducing the risk of scuffing, pitting and spalling. By protecting gear surfaces under severe operating conditions, the oil helps extend component life and maintain reliable drivetrain performance.
Shell Spirax S3 AS 80W-140 also provides excellent oxidation stability. Automotive axle systems often operate under high temperatures and mechanical stress that can accelerate oil degradation. The advanced additive system used in this lubricant exceeds the enhanced oxidation stability requirements of the latest API gear oil specifications. This helps maintain oil performance over extended service intervals while preventing the formation of harmful deposits that could affect gear operation.
Another important benefit of Shell Spirax S3 AS 80W-140 is its enhanced spalling resistance and improved filterability. The formulation has been specifically developed for use in axle systems fitted with oil filtration units. The lubricant maintains good flow characteristics through filters during operation, ensuring effective oil circulation and filtration throughout the oil service interval. This helps maintain oil cleanliness and consistent lubrication performance across demanding operating conditions.
Shell Spirax S3 AS 80W-140 is recommended for use in a wide range of heavy-duty automotive axle applications, particularly those utilising hypoid gear systems. It is suitable for many modern heavy-duty axles and can offer extended oil drain capability in specific equipment where permitted by the manufacturer. The lubricant may also be used in certain non-synchronised heavy-duty gearboxes and some synchronised heavy-duty gearboxes where oils meeting API GL-5 or MT-1 specifications are required. However, it should not be used in manual transmissions where API GL-4 oils are specified.
The product meets key industry and OEM specifications including API GL-5 and MT-1. It also carries approvals including Scania STO 1:0 and ZF TE-ML 05A, 12E, 16C and 21A and is recommended by Renault Trucks for certain heavy-duty axle applications. Physical characteristics include a kinematic viscosity of approximately 237 mm²/s at 40°C and 24.8 mm²/s at 100°C with a viscosity index of approximately 132. The oil has a density of approximately 904 kg/m³ at 15°C and a flash point of approximately 185°C, supporting reliable lubrication performance in demanding heavy-duty drivetrain environments.
