Lubricating oil compositions

Details Lubricating oil compositions Lubricating oil compositions

C - Chemistry, Metallurgy

10

M

C10M 159/20 (2006.01) C10M 159/22 (2006.01) C10M 159/24 (2006.01)

Patent

CA 2283105

A substantially magnesium-free lubricating oil composition comprising a mixture of at least two metal-containing detergents, a first detergent (a) being a metal phenate, sulphonate, salicylate, naphthenate, or carboxylate, and a second detergent (b) being a calcium overbased complex detergent comprising a surfactant system derived from a mixture of surfactants including sulphurized or non-sulphurized phenols or derivatives thereof and/or sulphurized or non- sulphurized salicylic acids or derivatives thereof. By addition of complex detergent (b), the composition exhibits improved corrosion protection and deposit control.

L'invention concerne des détergents complexes qui, incorporés aux lubrifiants du carter-moteur, permettent de limiter la formation de dépôt et assurent une meilleure protection contre la corrosion.

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