Shell Tellus S3 M 68
Shell Tellus S3 M 68 is a premium high-performance hydraulic fluid developed to provide reliable protection, long service life and efficient operation in a wide range of industrial and mobile hydraulic systems. Formulated using advanced zinc-free additive technology together with high-quality base oils, Shell Tellus S3 M 68 offers excellent resistance to oxidation and wear while maintaining system cleanliness and performance. The formulation is designed to resist breakdown under heat and mechanical stress, helping prevent the formation of damaging deposits that can reduce hydraulic system efficiency and reliability.
One of the key advantages of Shell Tellus S3 M 68 is its extended fluid service life. Shell Tellus S3 M 68 provides excellent oxidation stability and resistance to thermal degradation, allowing the fluid to maintain its protective properties over extended operating periods. The formulation is designed to achieve extended oil life, supporting longer maintenance intervals and helping reduce equipment downtime. Shell Tellus S3 M 68 also demonstrates strong resistance to breakdown in the presence of water and high temperatures, ensuring reliable lubrication performance even in demanding operating environments.
Shell Tellus S3 M 68 also delivers outstanding wear protection for hydraulic pumps and system components. The advanced zinc-free anti-wear additive system forms a durable lubricating film between metal surfaces, helping protect components from wear under both low and severe duty conditions. Shell Tellus S3 M 68 has demonstrated strong performance in recognised industry pump tests, helping extend the service life of pumps, valves and other critical hydraulic components while maintaining reliable system performance.
Maintaining hydraulic system efficiency is another important benefit of Shell Tellus S3 M 68. The formulation provides excellent cleanliness and filterability characteristics, helping maintain consistent fluid flow and reduce the risk of filter blockage. Shell Tellus S3 M 68 also offers strong water separation, air release and antifoam performance. These properties help ensure efficient hydraulic power transmission while minimising the effects of cavitation and foaming that can reduce system efficiency or shorten fluid life.
Shell Tellus S3 M 68 is suitable for a wide range of hydraulic systems used in manufacturing and industrial environments. The fluid is particularly suited for severe-duty hydraulic service where equipment may operate under high loads or elevated temperatures. Shell Tellus S3 M 68 is also suitable for marine and mobile hydraulic systems where ISO HM category fluids are recommended. In addition, the zinc-free formulation offers a reduced environmental impact in the event of accidental leakage compared with conventional zinc-containing hydraulic fluids.
Physical characteristics include a kinematic viscosity of approximately 68 mm²/s at 40°C and 8.9 mm²/s at 100°C with a viscosity index of approximately 105. Shell Tellus S3 M 68 has a density of approximately 870 kg/m³ at 15°C, a flash point of around 235°C and a pour point of approximately −33°C, supporting reliable hydraulic lubrication performance across a wide range of operating conditions.
