Oil analysis is a quick, nondestructive way to gauge the health of an engine by looking at what’s in the oil.
What does a standard analysis include?
In our standard oil analysis, we perform four tests:
In the spectral exam, we take a portion of your oil sample and run it through a machine called a spectrometer, which tells us the levels of metals and additives that are present in the oil. To learn more about the elements we look at and where they come from in your oil, go to our Report Explanation page.
The insolubles test measures the solids 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 tells you how good a job the oil filter is doing, and to what extent the oil has oxidized.
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. 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 lower than it should, then it’s probably been contaminated. Fuel is the most common contaminant in oil.
We can perform our standard oil analysis on any sample of oil, whether it’s engine oil, transmission oil, an oil-based additive, gear oil, hydraulic oil, power steering fluid, biodiesel, or another type of oil.
There are more specialized tests we can perform on an oil sample, depending on your needs. For a complete list of the tests we do and their cost, go to our Tests page.