Patent ID: 8242066

Claim:
A lubricating oil composition having a compositional TBN of at least 6 mg KOH/g, as measured in accordance with ASTM D-2896, comprising a major amount of oil of lubricating viscosity and a minor amount of one or more compounds of the formula: wherein R 1 and R 2 independently represent C 3 or higher alkyl or substituted alkyl having no aryl substituent; R′, or each R′ independently, represents hydrogen, alkyl or alkoxy; n is 0 to 4; and X represents substituent group selected from alkoxy, or substituted alkoxy, wherein said substituent group has a Hammett σ + value that is negative, and has an absolute value of ≦1.5, wherein at least 10% of the compositional TBN, as measured in accordance with ASTM D2896, is derived from ashless TBN sources, and at least 5% of the compositional TBN, as measured in accordance with ASTM D2896 is derived from at least one compound of Formula (I).