Extended life functional fluid

Details Extended life functional fluid Extended life functional fluid

C - Chemistry, Metallurgy

10

M

253/57

C10M 163/00 (2006.01)

Patent

CA 1060878

ABSTRACT OF THE DISCLOSURE EXTENDED LIFE FUNCTIONAL FLUID Functional fluid lubricating oil compositions are provided which comprise (a) a major amount of an oil of lubricating viscosity, and (b) an effective amount of each of the following: (1) an alkenyl succinimide, (2) a Group II metal salt of a dihydrocarbyl dithiophosphoric acid, (3) a compound selected from the group consisting of (a) fatty acid esters of dihydric and polyhydric alcohols, and oil soluble oxyalkylated derivatives thereof, (b) fatty acid amides of low molecular weight amino acids, (c) N-fatty alkyl-N,N-diethanol amines, (d) N-fatty alkyl-N,N-di(ethoxyethanol) amines, (e) M- fatty alkyl-N,N-di-poly(ethoxy) ethanol amines, and (f) mixtures thereof, and (4) a basic sulfurized alkaline earth metal alkyl phenate. Such lubricating compositions are useful as functional fluids in systems requiring fluid coupling, hydraulic fluid and/or lubrication of relatively moving parts. The lubricating compo- sitions of the invention are particularly useful as the functional fluid in automatic transmissions, particularly in passenger automobiles.

228815

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