Introducing glycol into lubricating oils exposes your machines to a powerful and poisonous mixture of chemicals. Unlike other harmful contaminants such as water and dirt, the destructive potential of glycol can progress to massive failure of machine components in a narrow window of time.

There could hardly be a more important role for the oil analyst than the routine screening of lubricating oils for the presence of glycol. One large oil analysis laboratory that specializes in heavy-duty fleet equipment deployed in mining and construction reported that glycol was found in 8.6 percent of motor oil samples over a period of years – about one in 12 samples.

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Book Chapter
Fuels and Lubricants Handbook: Technology, Properties, Performance, and Testing
Editor George Totten.

The aim of this chapter is to briefly present six analytical methods for characterizing hydrocarbon compounds found in fuels and lubricants. The methods presented are NMR spectrometry, gas chromatography, liquid chromatography, ultraviolet spectroscopy, mass spectrometry, and infrared spectroscopy. The analysis of hydrocarbons deploying these methods is well-founded in scientific laboratories and is the basis of numerous ASTM standards.

Because of the large body of published work on these methods, it is not the intention of the authors to attempt complete coverage of all methods, but rather to provide an overview of their use in the analysis of fuels and lubricants. Following each section are summaries specific to ASTM D 02 standards where the analytical method is deployed in the areas of fuels and lubricants.

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