Long life lubricating oil composition with detergent mixture...

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 135/18 (2006.01) C10M 129/54 (2006.01) C10M 129/76 (2006.01) C10M 159/20 (2006.01) C10M 163/00 (2006.01)

Patent

CA 2393151

A long life lubricating oil as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of high TBN, medium TBN and low/neutral TBN detergents wherein metal salicylate detergent is at least one of the medium or low/neutral TBN detergents.

La présente invention concerne une huile lubrifiante longue durée dont les qualités sont attestées par un moindre accroissement de viscosité, une moindre oxydation et une moindre nitration. Cette huile est constituée pour une majeure partie d'huile de base de viscosité lubrifiante, et pour une moindre proportion d'un mélange de détergents d'indices de base élevés, moyens et bas ou neutres. Les détergents à indices de base bas ou neutres sont essentiellement des détergents à base de salicylates de métaux.

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