The Lubrizol Corporation

Raymond M Calder

John Kent Pudelski

Jeffry G Dietz

Brent R Dohner

Steven A Goodlive

Wolfie Kotzen

Frederic Martin

A composition of matter comprising an amine acylated with a hydrocarbyl group substituted carboxylic acylating agent containing an average of from 1.3 to 1.6 groups derived from &#x3b1;,&#x3b2;-unsaturated carboxylic compounds perof the hydrocarbyl group, wherein the hydrocarbyl group hasdetermined by GPC ranging from 1500 to 3000, the amine comprises polyamine bottoms and said acylated amine has total base number (TBN) ranging from 17 to 35. A method for preparing the composition, lubricating oils containing the composition and, in another embodiment, lubricating oil compositions of this invention further comprising a metal overbased sulfonate detergent.

Low-chlorine, polyolefin-substituted, with amine reacted, alpha-beta unsaturated carboxylic compounds

This invention relates to a method of reducing intake valve deposits in a direct injection engine, the method comprising lubricating the engine with a lubricating oil composition comprising a base oil mixture, the base oil mixture comprising (i) a Group III, a Group IV oil, or a mixture thereof, in combination with (ii) a synthetic ester oil, the weight ratio of (i) to (ii) being from about 0.2:1 to about 6:1.

Method of reducing intake valve deposits in a direct injection engine

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Allstreet, United Kingdom

Raymond M Calder