| abstract |
The present Invention relates to the use of a compound in a lubricating composition as an engine oil antiwear and/or extreme pressure agent, wherein the compound is a heterocycle having a hydrocarbyl group containing 6 to 40 carbon atoms, wherein the heterocycle is either (i) a heterocycle compound having a functional group selected from the group consisting of at least one of an ester, an amide, a salt and an acid, or (ii) a pyrimidine. |