Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
Volume 219, Issue J5, Pages 331-346Publisher
PROFESSIONAL ENGINEERING PUBLISHING LTD
DOI: 10.1243/135065005X9718
Keywords
lubricant; lubrication; fuel economy; oxidation stability; after-treatment device compatibility; low sulphated ash; phosphorus; and sulphur
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A review is undertaken of the important trends in engine lubricant performance tests that have taken place over the last 10-15 years. Lubricant formulations are driven by industry standard specifications, original equipment manufacturer requirements, and consumer needs. A review is given of the important specifications and associated performance tests, and how these have impacted on lubricant development. The key trends are, firstly, the need for improved fuel economy, secondly, the need for improved oxidation stability, thirdly, the need for improved handling of contaminants (e.g. soot), and, fourthly, the recent move to lubricants containing low levels Of Sulphur, phosphorus, and sulphated ash, for after-treatment device compatibility reasons.
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