Patent ID: 7807611

Claim:
A low-sulfur, low-phosphorus, low-ash lubricant composition suitable for use in an internal combustion engine, comprising: (a) an oil of lubricating viscosity, and (b) a condensation product of a material represented by formula I and an alcohol or amine having from 6 to 80 carbon atoms and combinations thereof; wherein each R is independently H, or a hydrocarbyl group, or wherein the R groups together form a ring; wherein said lubricant composition further comprises a metal dialkyldithiophosphate; and wherein said lubricant composition has a sulfated ash value of up to about 1.0, a phosphorus content of up to about 0.08 percent by weight and a sulfur content of up to about 0.4 percent by weight; and wherein the amount of condensation product is about 0.05 to about 5.0 percent by weight.