Shell Alexia 100
Shell Alexia 100 is a high-performance cylinder lubricant specifically developed for two-stroke low-speed marine diesel engines operating on residual fuel oils with high sulphur content. It is formulated as an SAE 50, BN100 lubricant using proven and reliable additive technology designed to deliver dependable engine cleanliness and effective protection against corrosive and abrasive wear.
A key performance feature of Shell Alexia 100 is its excellent acid neutralising capability. With a Base Number (BN) of 100 mg/KOH/g, the oil effectively neutralises acidic by-products formed during the combustion of high sulphur fuels. This helps minimise corrosive wear on cylinder liners and piston rings, prolonging component life and maintaining engine reliability under demanding operating conditions.
Shell Alexia 100 is engineered to minimise deposit formation on pistons, piston rings, ring grooves, under-piston spaces and in cylinder ports. By maintaining cleaner engine internals, it supports low cylinder and piston ring wear while reducing the risk of ring sticking, scuffing and excessive deposit build-up. Cleaner operation contributes directly to lower maintenance costs and extended periods between overhauls.
The lubricant is completely stable in storage under the wide range of conditions encountered aboard ships, providing reassurance in long-haul marine environments. It is compatible with all normal oil seal materials and is fully miscible with other cylinder lubricants within the Shell portfolio, although for optimum performance it should not be used in conjunction with other brands.
Shell Alexia 100 is approved for use in MAN-ES, WinGD and MHI two-stroke engine designs, provided engine manufacturer guidelines and feed rate recommendations are followed. Correct cylinder oil feed rates are essential to prevent corrosive wear, seized or broken rings, excessive deposits and associated risks such as blow-by or scavenge fires.
Typical physical characteristics include a kinematic viscosity of 18.5 mm²/s at 100°C, minimum viscosity index of 95, flash point minimum 210°C, and sulphated ash content of 12.8% wt.
