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US 2008/0176777 A1Published application
High tbn / low phosphorus economic stuo lubricants
AssigneeAfton Chemical Corporation
InventorsJeffrey L. Milner, Peter L. Leitner, John M. Pietras
Life of this patent
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Abstract
There is disclosed a Super Tractor Oil Universal lubricating composition comprising an oil of lubricating viscosity formulated with an additive package comprising at least one metal detergent, at least one phosphorus-based wear preventative, and at least one molybdenum compound. Methods for improving the braking performance of a tractor and the anti-wear protection of a tractor engine are also disclosed.
Claims20
A super tractor oil universal lubricating composition comprising:
- a) an oil of lubricating viscosity having a viscosity index of at least about 95, formulated with additive components comprising:
- i) at least one metal detergent;
- ii) at least one phosphorus-based wear preventative;
- iii) at least one oil soluble molybdenum compound;
- b) characterized in that a ratio between a content (ppm) of metal based on the total weight of the lubricating Decomposition and a total base number of the lubricating composition (mg KOH/g) ranges from about 210 to about 450 (ppm/mg KOH/g);
- c) a ratio between the content (ppm) of the metal based on the total weight of the lubricating composition and a content (ppm) of phosphorus based on the total weight of the lubricating composition ranges from about 5.0 to about 20.0 (ppm/ppm);
- and
- d) a ratio between the content (ppm) of phosphorus based on the total weight of the lubricating composition and a content (ppm) of molybdenum based on the total weight of the lubricating composition ranges from about 0.5 to about 80.0 (ppm/ppm).
5 more elements
A super tractor oil universal additive package comprising:
- a) a metal detergent;
- b) a phosphorus-based wear preventative;
- c) an oil soluble molybdenum compound;
- d) characterized in that a ratio between a content (ppm) of metal based on the total weight of the additive package and a total base number of the additive package (mg KOH/g) ranges from about 210 to about 450 (ppm/mg KOH/g);
- e) a ratio between the content (ppm) of the metal based on the total weight of the additive package and a content (ppm) of phosphorus based on the total weight of the additive package ranges from about 5.0 to about 20.0 (ppm/ppm);
- and
- f) a ratio between the content (ppm) of phosphorus based on the total weight of the additive package and a content (ppm) of-molybdenum based on the total weight of the additive package ranges from about 0.5 to about 80.0 (ppm/ppm).
4 more elements
Dependencies are inferred from the claim text.