Shell Mysella S3 N 40
Shell Mysella S3 N 40 is a high-performance stationary gas engine oil specifically developed for use in modern four-stroke spark-ignition engines operating on natural gas and other gaseous fuels. Formulated using high-quality base oils and advanced additive technology, the lubricant is engineered to provide reliable engine protection, extended oil life and consistent performance in demanding gas engine environments. The product is particularly suited for engines designed to meet strict emissions regulations and those utilising advanced lean-burn or clean-burn combustion technologies.
A key benefit of Shell Mysella S3 N 40 is its ability to deliver extended oil life in stationary gas engines. The formulation is designed to resist oxidation and nitration, two common causes of oil degradation in gas engine applications. By controlling these chemical reactions, the oil helps minimise viscosity increase, reduces the formation of harmful acids and maintains lubricant performance over extended service intervals. This contributes to improved engine reliability and can help reduce maintenance frequency and downtime.
Shell Mysella S3 N 40 also provides excellent engine protection through its low-ash additive system. Gas engines often require lubricants with carefully controlled ash content to prevent deposit formation on valves and combustion components. The low sulphated ash and low phosphorus formulation helps protect valves, pistons and combustion chambers while supporting long service life for spark plugs and emission control catalysts. This balanced formulation helps maintain engine cleanliness and reliable combustion performance over long operating periods.
Another important advantage of Shell Mysella S3 N 40 is its compatibility with modern emissions-controlled engines. Many stationary gas engines operate under strict environmental regulations that limit nitrogen oxide (NOx) emissions. The oil has been specifically developed to meet the lubrication requirements of engines designed for these regulations while maintaining excellent protection and durability under lean-burn operating conditions.
Shell Mysella S3 N 40 is suitable for a wide range of stationary gas engine applications, particularly spark-ignited engines operating on natural gas. It may also be used in engines operating on alternative gaseous fuels such as landfill gas or biogas, where appropriate manufacturer recommendations allow. The oil is widely used in power generation facilities, gas compression systems and industrial energy plants where reliable continuous operation is essential.
The lubricant meets the requirements of several major engine manufacturers and is approved for use in a wide range of equipment including INNIO Jenbacher gas engines, MTU Series 4000 engines, Caterpillar CG gas engines, MWM gas engines and Perkins 4000 series engines. It is also suitable for use in Rolls-Royce, Wärtsilä, MAN Energy Solutions and Waukesha gas engine platforms where low-ash oils are specified.
Physical characteristics include a kinematic viscosity of approximately 135 mm²/s at 40°C and 13.5 mm²/s at 100°C with an SAE viscosity grade of 40. The oil has a density of approximately 890 kg/m³ at 15°C, a flash point of approximately 230°C and a pour point of approximately –18°C, supporting reliable lubrication performance across a range of stationary gas engine operating conditions.
