Operators are expected to take one of three predominant routes to compliance.
- Compliant Low Sulphur Fuel Oils
- Installation of abatement technology (scrubbers)
- Alternative fuels such as LNG, Methanol and others
The majority of customers, opertaing two stroke engines, are expected to switch to compliant Low Sulphur Fuels (LSFO's), for this Chevron recommends using Taro Ultra 40.
Cylinder lubricants with a base number (BN) between 70 and 140 are ideal for use with high sulphur fuels, but using them in conjunction with a lower sulphur, IMO compliant fuel, will introduce excessive alkalinity in the combustion chamber, which can lead to the formation of harmful deposits. In some cases, for example if an engine currently requires a minimum BN of 100 or 140 as a result of higher than average acid compensation for example, a switch to Taro Ultra 70 is recommended.
Dual fuel engines may require closer investigation in to actual operating conditions before a cylinder oil recommendation is made. Always check with your technical representative if you are unsure, and use an oil analysis service so you can address problems, before they occur.