Lubricating composition

1. 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 0.4 wt % and at most 1.0 wt. %, by weight of the lubricating composition;

a total base number TBN value according to ASTM D 2896 of at least 4.0 mg KOH/g and at most 12 mg KOH/g;

a total aromatics content contributed by the base oil in the range from 1 wt % to 20 wt %, by weight of the lubricating composition; and

a sulphur content contributed by the base oil of 0.4 wt % or less, by weight of the lubricating composition;

and wherein the base oil comprises a blend of (i) a first base oil which is an API Group I mineral base oil and (ii) a second base oil, wherein the second base oil is an API Group II base oil,

wherein the API Group I mineral base oil is present at a level from 5 wt % to 40 wt %, by weight of the lubricating composition,

wherein the API Group II base oil is present at a level from 50 wt % or more, by weight of the lubricating composition,

wherein the lubricating composition comprises an aminic antioxidant comprising an amine formula (I):

wherein R 1 is

and R 2 is hydrogen, an alkyl, an aralkyl or an alkaryl group, R 3 is hydrogen, an alkyl or an alkaryl group, with the proviso that when R 2 is hydrogen or an alkyl group with less than 8 carbon atoms, then R 3 is an alkyl or alkaryl group containing at least 8 carbon atoms in the alkyl chain, and

wherein the aminic antioxidant is present at a level from 1.5 to 3.0 wt %, by weight of the lubricating composition.

2. The lubricating composition according to claim 1 wherein the API Group I mineral base oil is brightstock.

3. The lubricating composition according to claim 1 wherein the viscosity of the API Group I mineral base oil is 8 mm 2 /s or more at 100° C.

4. The lubricating composition according to claim 1 wherein R 2 and R 3 are selected from alkyl groups having from 4 to 50 carbon atoms.