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METHOD FOR IMPROVING ENGINE FUEL EFFICIENCY

  • US 20150175924A1
  • Filed: 03/19/2014
  • Published: 06/25/2015
  • Est. Priority Date: 12/23/2013
  • Status: Abandoned Application
First Claim
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1. A method for improving fuel efficiency and friction reduction properties, while maintaining or improving deposit control, in an engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil, said formulated oil having a composition comprising a lubricating oil base stock as a major component;

  • and a metal-containing organic complex friction modifier, as a minor component;

    wherein the metal-containing organic complex friction modifier comprises a tungsten organic complex that provides between 20 parts per million (ppm) and 500 ppm of tungsten to the formulated oil; and

    wherein fuel efficiency and friction reduction properties are improved and deposit control is maintained or improved as compared to friction reduction properties and deposit control achieved using a lubricating engine oil containing a minor component other than the tungsten organic complex.

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