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US 2011/0301068 A1Published application
Lubricating composition
AssigneeShell International Research Maatschappij B.J.
InventorsClaudio Cocco, Jose Luis Garcia Ojeda
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Abstract
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.
Claims10
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.
Dependencies are inferred from the claim text.