Description:

Shell Alexia LS is a special 40BN, SAE 50 cylinder lubricant, for improved piston running conditions in low speed crosshead diesel engines burning low sulphur fuels.

Applications:

Cylinders of low-speed crosshead diesel engines burning fuels with sulphur content below 2%wt, where the designer recommends a lower Base Number (BN) oil to reduce the risk of “sudden severe wear” or scuffing. 

Performance Features:

Reduced piston deposits
The reduced ash level of Alexia LS helps to avoid excessive piston top land deposits, which can sometimes build up when 70BN oils are used with low sulphur fuel.

Good piston ring and port cleanliness
Alexia LS contains “hidden” detergency, not reflected in the BN of the product. This enables it to keep the ring belt and scavenge air ports clean in spite of the reduced BN.

Greater feed rate flexibility
The control of deposits and lower ash allows Alexia LS to be used over a wider range of feed rates with less danger of excessive deposits, than a 70BN cylinder oil.