Infineum International Limited

Jatco Corporation

Hahn Soo Kim

Raymond F Watts

Keith R Gorda

Hirokazu Saito

Makoto Maeda

Yasuhiro Mogi

Takashi Aritake

Hiroshi Morisato

Gou Katou

Joseph R Noles, Jr

Thomas Lin

A booster additive concentrate may advantageously contain: (a) an anti-wear mixture of two or more phosphite/phosphate compounds and one or more ether/thioether compounds; (b) an ashless dispersant; (c) a calcium-containing detergent, such as an overbased calcium phenate; (d) &#x2265;2 friction modifiers, at least one of which comprises a polyalkylene polyamine succinimide derivative; (e) optionally a corrosion inhibitor; and (f) a lubricating oil basestock. Based on these additive components, the booster additive concentrate may exhibit specific contents of B/Ca/P and may contain minimal or substantially no additional antioxidants. Lubricant compositions can be made from the booster additive concentrates and a fresh/used lubricant oil composition 'diluent,' which can rejuvenate the diluent. Such lubricant compositions can have advantageous anti-shudder durability (ASD) lifetimes and other frictional properties. In particular, such concentrates/compositions can offer superior lubrication when used in vehicles with continuously variable transmissions (CVTs).

Rejuvenation and/or extension of the lifetime of frictional performance in transmission fluids

Automotive transmission fluid compositions are provided having improved power transmission properties through the presence therein of certain defined additives, which increase the fuel efficiency of the vehicle during operation. The invention further provides a process for the manufacture of such transmission fluid compositions, a method of improving the energy efficiency of a transmission, and an additive concentrate for a transmission fluid.

Automotive transmission fluid compositions for improved energy efficiency

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Basking Ridge, NJ, United States of America

Hahn Soo Kim