Lubricating-oil compositions.

摘要

Lubricating-oil compositions, characterized in that they comprise
<UnorderedLists id="ula01" listStyle="none"><ListItem>a) one or more lubricating oils,</ListItem><ListItem>b) one or more basic salts of polyvalent metals and naphthenic acids, and</ListItem><ListItem>c) one or more polyesters or salts thereof, which are either derived from one or more hydroxycarboxylic acids of the general formula HO-X-COOH, wherein X represents a bivalent saturated or unsaturated aliphatic radical containing at least 8 carbon atoms with at least 4 carbon atoms being situated between the hydroxyl group and the carboxyl group, or derived from a mixture of one or more such hydroxycarboxylic acids and one or more carboxylic acids containing no hydroxyl groups.</ListItem></UnorderedLists>