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Sources of Magnesium

Sources of Magnesium Magnesium is an additive metal commonly used in detergent additives. Only when the magnesium level deviates more than 25% from the new oil or reference value should a concern be raised, but the likeliest cause if mixing or topping-off with a different product. With normal and expected additive depletion due to usage,…
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Sources of Calcium

Sources of Calcium Calcium is an additive metal commonly used in detergent additives. Only when the calcium level deviates more than 25% from the new oil or reference value should a concern be raised, but the likeliest cause is mixing or topping off with a different product. With normal and expected additive depletion due to…
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Understanding Particle Counting Methods

Understanding Particle Counting Methods Particle counting is considered by many to be one of the most important test for used oil analysis. Many problems can be quickly and easily identified by monitoring the number and size-distribution of particles in an oil sample. The ISO Code is the most common unit of reporting the number of…
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FTIR vs. RULER

FTIR vs. RULER Let's start by explaining the FTIR index numbers and then we’ll get in to the correlation between tests. The indexing numbers actually refer to a unit of measure. The unit is absorbance/0.1mm. However, this unit of measure is not one that is intuitive to most people so the results are referenced as…
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Sources of Silver

Sources of Silver Silver is a wear metal used as an overlay on some bearings, such as journal bearing for gas turbines or wrist pin bearings on EMD locomotive engines. Silver from these parts will increase disproportionately with iron. Zinc additized oils will accelerate the corrosion of silver in these applications, therefore the use of…
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Testing Lubricants for Compatibility

Testing Lubricants for Compatibility TestOil offers lubricant compatibility analysis using ASTM D 7155 as the guideline for compatibility testing. If test results show signs of minor incompatibility you must evaluate the potential impact. Do the mixtures show a decreased ability to resist oxidation? Will this result in a shortened lubricant life and therefore increased cost…
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