The present invention relates to the use of organometallic salt compositions as lubricant additives and/or lubricant additive compositions to alleviate the formation of white etching cracks (WEC).

Disclosed is an internal combustion engine lubricating oil composition for reducing corrosion in the engine of a hybrid vehicle. Reduction of corrosion can be determined by the JIS K2246 test method. Also disclosed are methods for using said lubricating oil composition for reducing corrosion in the engine of a hybrid vehicle.

Disclosed is an internal combustion engine lubricating oil composition for reducing corrosion in the engine of a hybrid vehicle. Reduction of corrosion can be determined by the JIS K2246 test method. Also disclosed are methods for using said lubricating oil composition for reducing corrosion in the engine of a hybrid vehicle.

An object is to provide a grease composition for a ball joint capable of reducing the starting torque, reducing the operating torque, and improving the low temperature property as compared with the related art. The grease composition for a ball joint according to the present invention contains a silicone oil as a base oil and an additive, and contains an amino-modified silicone and a modified polyolefin as the additive. The silicone oil preferably includes at least one of dimethyl silicone oil and phenyl-modified silicone oil.

An object is to provide a grease composition for a ball joint capable of reducing the starting torque, reducing the operating torque, and improving the low temperature property as compared with the related art. The grease composition for a ball joint according to the present invention contains a silicone oil as a base oil and an additive, and contains an amino-modified silicone and a modified polyolefin as the additive. The silicone oil preferably includes at least one of dimethyl silicone oil and phenyl-modified silicone oil.

A sliding member which has low sliding resistance, can prevent the leakage of a liquid, has low dust emission properties and low leachability, and can be manufactured in a simple manner; and a method for manufacturing the sliding member. The sliding member includes an elastic molded body which is coated with a coating layer composition containing an amino-modified silicone compound having a silanol group and/or an alkoxysilyl group and also having an amino-containing group in a side chain. The method for manufacturing the sliding member includes the steps of: preparing the coating layer composition containing the amino-modified silicone compound having the silanol group and/or the alkoxysilyl group and also having the amino-containing group in a side chain; applying the coating layer composition to the elastic molded body; and coating the elastic molded body with the coating layer composition.

A sliding member which has low sliding resistance, can prevent the leakage of a liquid, has low dust emission properties and low leachability, and can be manufactured in a simple manner; and a method for manufacturing the sliding member. The sliding member includes an elastic molded body which is coated with a coating layer composition containing an amino-modified silicone compound having a silanol group and/or an alkoxysilyl group and also having an amino-containing group in a side chain. The method for manufacturing the sliding member includes the steps of: preparing the coating layer composition containing the amino-modified silicone compound having the silanol group and/or the alkoxysilyl group and also having the amino-containing group in a side chain; applying the coating layer composition to the elastic molded body; and coating the elastic molded body with the coating layer composition.

A lubricating oil composition including a major amount of a base oil, one or more calcium-containing detergents to provide at least 1000 ppmw of calcium, and one or more silicon-containing compound(s) to provide at least 50 ppmw of silicon to the lubricating oil composition, all based on the total weight of the lubricating oil composition, wherein a ratio of ppmw of silicon provided by the one or more silicon-containing compound(s) to the lubricating oil composition to the ppmw of calcium provided by the one or more calcium-containing detergent(s) to the lubricating oil composition is from 0.02 to 1. Methods of using these compositions and silicon-containing detergents are also described.

Disclosed is a composition of a lubricant for cold pilgering of zirconium alloy tubes. More particularly, disclosed is a composition of an external lubricant for cold pilgering of a zirconium alloy cladding tube, the composition exhibiting excellent lubricity and decomposition against microbes.

Disclosed is a composition of a lubricant for cold pilgering of zirconium alloy tubes. More particularly, disclosed is a composition of an external lubricant for cold pilgering of a zirconium alloy cladding tube, the composition exhibiting excellent lubricity and decomposition against microbes.