Medium-ash gas engine oil. Shell Mysella S3 S is a high-performance oil for use in four-stroke, spark-ignition engines that require a "medium ash" oil or that use sour gases, such as landfill, bio or waste gas, as fuel. Shell Mysella S3 S is also suitable for engines that traditionally require a medium-ash oil to protect the valve seat area of the cylinder head. Shell Mysella S3 S meets the needs of the new generation of stationary gas engines designed to comply with emerging legislation limiting NOx emissions, as well as those using the latest "lean" or "clean" burn technology.
Applications
Spark-ignition gas engines running on natural gas that require a medium-ash oil
"Dual fuel" gas engines, with pilot diesel fuel ignition
Ideal for engines running on sour gases
Performance & benefits
Extended oil lifeSignificantly prolongs oil life by resisting oxidation and nitration; the high TBN (total base number) level neutralises acids and provides corrosion protection, even when "sour" gases are in use.
Engine protectionShell Mysella S3 S is formulated with an optimised level of "ash" components, which helps extend valve life in engines that prefer an oil with a medium ash level. With a maximum phosphorus content of 300 ppm, Shell Mysella S3 S is compatible with engines fitted with emission catalysts.
INNIO Jenbacher: Series 2, 3, fuel classes B and C
Shell Mysella S3 S is suitable for engine types that require a "medium ash" oil. Shell Mysella S3 S is approved by
Waukesha: Cogeneration application (natural gas pipeline quality). Shell Mysella S3 S meets the requirements
Wärtsilä: CR26. For engines under warranty, Shell recommends contacting the engine manufacturer and your Shell representative to choose the most suitable oil, according to the operating conditions and the customer's maintenance interval
Standards & approvals
MAN: 3271-4
Wartsila: CR26
Rolls Royce: KG-1, KG-2, KG-3 (operare biogaz)
Approved for
MAN
Jenbacher
Wartsila
Typical characteristics
Property
Typical value
Method
SAE viscosity grade
40
Kinematic viscosity la 40 °Cmm2/s
135
Astm D445
Kinematic viscosity la 100 °Cmm2/s
13.5
Astm D445
Density la 15 °Ckg/m3
894
Astm D4052
Flash point, vas închis°C
230
Astm D93A
Pour point°C
-18
ISO 3016
BN mg KOH/g
8.5
Astm D2896
Sulphated ash %wt
0.9
ISO 3987
Phosphorusppm
300
Astm D4047
Complete documentation
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