Increasing demands placed on cylinder oils
Marine lubricants play an increasingly important role as the engine room environment changes.
More efficient engines, new and varied fuels, and recent changes to leading OEM cylinder oil strategies are making lubricant choice a more important and complex decision. Castrol’s survey of marine owners, operators and managers, earlier this year, revealed that 30% of those surveyed had undertaken no or limited planning to prepare for these new fuels.
Benefits
Exceptional oxidation and thermal properties and excellent low temperature fluidity.
High viscosity index enables wider operating temperature range and improved low temperature startup.
Outstanding rust and corrosion protection relative to conventional gear oils, even in the presence of seawater contamination.
“The journey to decarbonisation will mean an increasingly diverse fuel mix, where lubricant choice becomes more critical”
The impact of using the wrong lubricant
When the dynamic between engine, fuel and lubricant isn’t right it could result in reduced efficiency, dirtier engines, and damage to cylinders, while increasing costs. The changes mean owners and operators should consult closely with lubricant providers to find solutions for enginesthat have a good balance of both cleaning and neutralising power.
Cassandra Higham, marketing director, Global Marine & Energy, Castrol, comments: “The sulphur cap means we have entered a new era of complexity in the engine room. In addition, the journey to decarbonisation will mean an increasingly diverse fuel mix, where lubricant choice becomes more critical.
“Increasing stress on engines, a focus on cost, and more blended fuels mean that previous assumptions in the choice of lubricants no longer apply. Castrol supports a new, collaborative approach, with an emphasis on engine cleanliness, in this more challenging operating environment.”
PROTECTING HARDWARE
Alkalinity alone is no longer enough
For years, the measure of performance of a cylinder oil has been largely based on its alkalinity, or base number (BN). However, with lower sulphur levels in fuels, cylinder oils need to have both cleaning and neutralising power to protect engine hardware.
Castrol Cyltech 40SX was formulated with a bespoke detergency system specifically for use with low sulphur fuels.
Higham adds: “It is vital that lubricant providers, engine manufacturers, ship owners, fuel suppliers and technical staff come together to smooth the road for shipping. The current challenges are only the tip of the iceberg, as the shipping industry aims to transition to new lower carbon fuels and energy.”
Castrol is working with the whole sector to help change the way the market views marine lubricants. Part of this includes a programme of consultative operational and technical improvements that can ultimately drive efficiencies across the engine room – an initiative called ‘Smartgains’.
Higham concludes, “As the industry works to stabilise we’re encouraging the conversations.”
Castrol Cyltech 40SX
A 40 BN high detergent, premium marine diesel engine cylinder lubricant for two-stroke
crosshead engines running on low-sulphur fuels.
Cyltech 40SX meets the requirements of MAN Diesel & Turbo, WinGD (Wärtsilä) & MHI (Mitsubishi) for operation on low
sulphur fuel under conditions as specified in their current oil recommendation list.
Castrol Cyltech 100
A premium marine diesel engine cylinder lubricant specifically developed to provide protection against corrosive wear.
With a base number (BN) of 100 the product provides a higher level of engine protection than cylinder oils with a lower BN (e.g. 70 BN products). The high BN is achieved by a careful balance of detergents that optimise cleanliness performance.
