Railway lubricating oil
AssigneeAmoco Corporation
InventorSteven Kennedy
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Abstract
A lubricating oil composition for railway diesel engines is disclosed which comprises a lubricating oil base, an ashless dispersant, an overbased alkaline earth metal akylphenolate, an alkaline earth metal alkyl sulfonate, an overbased alkaline earth metal phenolate a polyhydroxy compound of up to 60 carbon atoms or a mixture of a polyhydroxy compound of up to 60 carbon atoms and a chlorinated hydrocarbon.
Claims6
A method of reducing silver wear in marine and railway diesel engines by lubricating the internal portion thereof with a lubricating oil composition with a TBN of at least 5 containing an additive amount, sufficient to provide silver wear inhibition in marine and railway diesel engines having silver bearings, of a polyhydroxy compound having at least two hydroxyl groups selected from the group consisting of C.sub.8 to C.sub.22 fatty acid esters of alcohols of from 1 to 12 carbon atoms having at least two unesterified hydroxyl groups and mixtures thereof of said esters, a mixture of said polyhydroxy compound and chlorinated C.sub.8 to C.sub.22 fatty acids and derivatives thereof comprising esters of alcohols of from 1 to 25 carbon atoms and amides of amines of from 1 to 25 carbon atoms.
Dependencies are inferred from the claim text.