Zinc-free farm tractor fluid

Details Zinc-free farm tractor fluid Zinc-free farm tractor fluid

C - Chemistry, Metallurgy

10

M

C10M 169/04 (2006.01)

Patent

CA 2613438

A lubricating composition comprising an oil of lubricating viscosity; an amine salt of a phosphorus acid ester; a thiadiazole copper corrosion inhibitor; an overbased metal detergent; a boron compound; and at least one friction modifier provides good lubrication of a mechanical device such as a farm tractor, even though such composition is substantially free from zinc dialkyldithiophosphate.

L'invention concerne une composition lubrifiante qui comprend : une huile de viscosité lubrifiante ; un sel d'amine d'un ester d'acide phosphoreux ; un inhibiteur de corrosion du cuivre de type thiadiazole ; un détergent métallique superbasique ; un composé bore ; et au moins un modificateur de frottement. Cette composition permet d'assurer une bonne lubrification pour un dispositif mécanique de type tracteur agricole, même si ladite composition est sensiblement exempte de dialkyldithiophosphate de zinc.

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