| abstract |
The present invention provides a lubricating composition comprising a base oil and one or more additives, wherein the composition has: - a sulphated ash content (according to ASTM D 874) of at least 0.1 wt.% and at most 0.60 wt.%, preferably at most 0.55 wt.%, more preferably at most 0.50 wt.%; and - a total base number (TBN) value (according to ASTM D 2896) of at least 8.0 mg KOH/g and at most 15.0 mg KOH/g. |