Low ash, low phosphorus motor oil formulations

Details Low ash, low phosphorus motor oil formulations Low ash, low phosphorus motor oil formulations

1981-07-09

1982-05-18

Metz, Andrew

Compositions

Electrolytes for electrical devices

252 332, 252 334, C10M 148

Patent

active

043304206

ABSTRACT:
Described are low ash, low phosphorus motor oils having improved oxidation stability as a result of the addition thereto of synergistic amounts of a dialkyldiphenylamine antioxidant and of a sulfurized polyolefin. The synergism between the two additives compensates for the decreased amounts of phosphorus in the form of zinc dithiophosphate such that the oils retain an SE quality rating.

REFERENCES:
patent: 3522180 (1970-07-01), Sweeney et al.
patent: 3578595 (1971-05-01), Schlicht et al.
patent: 3897353 (1975-07-01), Mordouchowitz et al.
patent: 4010106 (1977-03-01), Rothert
patent: 4045376 (1977-08-01), Rubin et al.
patent: 4148738 (1979-04-01), Liston et al.
"Lubricant Additives" Smalheer et al., pp. 1-11, 1967, The Lezius-Hiles Co.

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