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Technical Bulletin: Varnish Report Updates

Technical Bulletin: Varnish Report Updates
Varnish Potential Analysis - Report Upgrades In order to provide the best analysis and recommendations of varnish test results, TestOil will be making some changes to reporting and alarming of several varnish test parameters. Ultra Centrifuge: After reviewing many case studies, TestOil analysts have determined that there are instances when ultra centrifuge results as low…
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Why Don’t My Oil Analysis Results Correlate?

Why Don’t My Oil Analysis Results Correlate?
Why Don’t My Oil Analysis Results Correlate? A common issue related to report interpretation deals with a perceived necessity for the results from two or more different tests to indicate the same potential problem. This expectation, which may be based on a misconception, often leads to greater confusion. Therefore, it is important to understand which…
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Understanding ISO Codes

Understanding ISO Codes
Understanding ISO Codes Though particle counting is reported as an actual count of the number of particles (of a given size, per ml of fluid), most specifications and limits simply refer to ISO codes. The ISO codes, according to the ISO 4406:1999 standard, relate to only three different ranges of particles, ≥4 µm/≥6 µm/≥14 µm.…
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Causes of High Nitration

Causes of High Nitration
Causes of High Nitration Excessive aeration can lead to compression combustion of air molecules (microdieseling) causing thermal breakdown of oil molecules, which will increase the nitration value. In engine applications, early combustion caused by advanced timing will produce nitration by-products. These by-products form a slimy brown or reddish-brown residue. For specific information on other measured…
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Causes of High Oxidation

Causes of High Oxidation
Causes of High Oxidation While some new oils may produce an oxidation value due to the presence of synthetic esters, increases in oxidation generally represent degradation of the fluid. The biggest driver to oxidation is heat, as the rate of reaction doubles with every 10 °C or 18 °F increase in temperature. This type of…
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Introduction to FTIR Spectroscopy

Introduction to FTIR Spectroscopy
Introduction to FTIR Spectroscopy Fourier Transform Infrared (FTIR) spectroscopy measures additive depletion, contaminant buildup and base stock degradation in lubricants. This type of analysis complements wear metal and other analyses. The principle of the test is that an infrared absorbance spectrum is acquired by passing an infrared beam through a thin layer of static sample.…
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