Premium cylinder oil for low-speed diesel enginesAlexia Oil 50 is a premium grade cylinder lubricant for use in all types of low speed crosshead
diesel engines burning residual fuels with sulphur contents of up to 3.5% weight.
It is ideally suited for the new generation of highly rated, fuel efficient, slow-speed marine diesel
engines operating with higher pressures, higher temperatures and longer strokes.
It is a blend of highly refined, high viscosity index base oils, and additives that incorporate unique
alkyl salicylate technology developed by Shell Research.
_ Low-speed marine diesel engines burning heavy fuel with a relatively high sulphur content of
between 1.0 to 3.5% weight.
_ Slow speed marine diesel engine cylinders
_ Unique alkyl salicylate additive technology
Imparts outstanding acid neutralising properties to counter corrosive wear resulting from the use
of high sulphur fuels
_ Minimum deposit formation
On cylinder ports, pistons, piston rings, ring grooves and under piston spaces
_ Low cylinder and piston ring wear
Cylinder wear rates below 0.05 mm per 1000 hours are commonly experienced
_ Excellent engine cleanliness
Extended interval between maintenance schedules – Periods between piston overhauls of up
to two years are not unusual
_ Storage stability
Completely stable in storage under all the widely varying conditions encountered aboard ship
_ Sight-glass fluid compatibility
Compatible with all normal lubricator sight glass fluids
_ Service experience
Developed over 35 years in close co-operation with ship-owners
All manufacturers of slow-speed crosshead diesel engines approve the use of Shell Alexia Oil 50
Oil Feed Rates
Insufficient cylinder oil feed rates can lead to corrosive wear, seized and broken rings and
consequent blow-by and scavenge fire risks, and to the formation of excessive and tenacious deposits.
To obtain optimum performance with Alexia Oil 50 it is important to:
_ Observe the engine manufacturers’ recommended cylinder oil feed rates as the minimum.
_ Consider using higher rates, especially when running in new liners and/or rings
_ Equally distribute the oil between injection quills
_ Ensure the lubricator drive system is well maintained and properly adjusted
_ Clean and overhaul lubricator boxes according to engine manufacturers’ recommendations
Alexia Oil 50 is compatible with all normal oil seal materials.
Advice on applications not covered in this leaflet may be obtained from your Shell Representative.
|Typical Physical Characteristics Shell Alexia Oil||50|
|SAE Viscosity Grade||50|
@ 40°C cSt
|Density @ 15°C kg/l
|Flash Point °C
(Pensky-Martens Closed Cup)
|Flash Point °C
(Cleveland Open Cup)
|Pour Point °C
These characteristics are typical of current production. Whilst future production will conform to
Shell’s specification variations in these characteristics may occur.
Alexia Oil 50 is unlikely to present any significant health or safety hazard when properly used in
the recommended application, and good standards of industrial and personal hygiene are maintained.
Avoid contact with skin. Use impervious gloves with used oil. After skin contact, wash immediately with
soap and water.
For further guidance on Product Health & Safety refer to the appropriate Shell Product Safety Data Sheet.
Protect the environment
Take used oil to an authorised collection point. Do not discharge into drains, soil or water