Patent ID: 9663743
Date: 2017-05-30
CPC Classifications: C10M,C10N

Claim:
1. A lubricant composition for reducing engine deposits, comprising: a) a base oil of lubricating viscosity; b) a molybdenum dithiocarbamate compound providing about 350 ppm to about 1000 ppm molybdenum metal by weight to the lubricant composition based on a total weight of the lubricant composition; c) from about 0.8 to about 2.0 wt. % based on a total weight of a lubricant composition of a reaction product of an alkyl-substituted dicarboxylic acid compound selected from the group consisting of alkyl-substituted dicarboxylic acids, alkyl-substituted dicarboxylic acid anhydrides, and mixtures thereof, and a basic salt of aminoguanidine, that provides an amount of alkyl bis-3-amino-1,2,4-triazole in the reaction product that is sufficient to reduce engine deposits according to a TEOST 33C test in the presence of (d) from about 0.2 to about 1.5 weight percent calcium phenate detergent based on a total weight of the lubricant composition, wherein the calcium phenate detergent has a total base number (TBN) ranging from about 60 to about 160 TBN; wherein the lubricant composition provides engine deposits according to the TEOST 33C test that are less than an amount of engine deposits in the absence of component (c) and component (d).