Methods of oil/fuel analysis

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Courtesy of GlobeCore GmbH

PC GlobeCore can propose you to make a reclaiming test of yours example of fuel (oil) to verify the possibility of clean it. If the oil is contaminated and not suitable for use, filtration can be recommended. Or, you can also make this test by yourself using our laboratory/test-bench transformer oil vacuum regeneration system UVR. The regenerated samples exceeded yours expectations. Average regeneration output from used oil with 2-4 % of solid contaminants and water 75-85 % (depending on mode of regeneration).

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Methods of oil/fuel analysis


Oil/fuel analysis is a series of laboratory tests used to evaluate the condition of lubricants and equipment components. By studying the results of the oil analysis tests, a determination of equipment/component condition can be made.

The inspection or analysis of lubricating oil has been used to check and evaluate the internal condition of oil-lubricated equipment since the beginning of the industrial age. Today, oil analysis programs use modern technology and laboratory instruments to determine equipment condition and lubricant serviceability. Oil analysis uses state of the art equipment and techniques to provide the user with invaluable information leading to greater equipment reliability.

If you understand all aspects of oil analysis you should reap the benefits that many companies get from a well-engineered, reliability-focused oil analysis program.


There exist a lot of different methods to analyze fuels and oils. For example, there is ASTM in North America or IEC TC10 in worldwide and Europe.

Standard oil analyses include four tests:

Spectral exam:

In the spectral exam, you need take a portion of your oil sample and run it through a machine called a spectrometer. The spectrometer analyzes the oil and tells you the levels of the various metals and additives that are present in the oil. This gives you a gauge of how much your engine is wearing.

Insolubles test:

The insolubles test measures the amount of abrasive solids that are present in the oil. The solids are formed by oil oxidation (when the oil breaks down due to the presence of oxygen, accelerated by heat) and blow-by past the rings. This test tells you how good a job the oil filter is doing, and to what extent the oil has oxidized. 

Viscosity test:

The viscosity measures the grade, or thickness, of the oil. Whether it's supposed to be a 5W/30, 15W/40, or some other grade, we will know (within a range) what the viscosity should be. If your viscosity falls outside that range, there's probably a reason: the oil could have been overheated or contaminated with fuel, moisture, or coolant. 

Flash Point test:

The Flash Point test measures the temperature at which vapors from the oil ignite. For any specific grade of oil, we know what temperature the oil should flash at. If it flashes at or above that level, the oil is not contaminated. If the oil flashes off lower than it should, then it's probably been contaminated with something. Fuel is the most common contaminant in oil. 

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