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Setting Acid Number and Base Number Limits

Setting Acid Number and Base Number Limits
Setting Acid Number and Base Number Limits There is a rule-of-thumb that oil should be condemned at double its new oil Acid Number, or at half of its new oil Base Number. The problem with this rule is that is has too many exceptions to be valid. Rather than identify the valid instances, it is…
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Setting ISO Cleanliness Targets

Setting ISO Cleanliness Targets
Setting ISO Cleanliness Targets Part of a lubrication program involves establishing ISO cleanliness targets, whether for new lubricants, or for in-service machines. The two primary difficulties arise from finding a reputable source and trying to find an exact fit. A seemingly smaller concern, but one with greater ramifications, is defining the difference between a target…
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Understanding Particle Counting Methods

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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Sources of Titanium

Sources of Titanium
Sources of Titanium Titanium is a wear metal commonly found alloyed with other metals. Proportional increases in titanium and iron are indicative of ferrotitanium, which is typically used in the manufacture of shafts. Lightweight titanium parts like connecting rods are alloys of titanium, aluminum, and vanadium; wear from these parts is often disproportional with iron…
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FTIR vs. RULER

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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Deadly Progression

Deadly Progression
Deadly Progression Why foresight can be more important than hindsight I would like to suggest we think about foresight, and there is probably no better example to exemplify this than the story of Thomas Midgely, Jr. Considering the impact Midgely has on all our lives, it is rather amazing his name is not more well-known.…
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