Fuel and Lubricant Testing


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ASTM D7462 - Oxidation Stability of Biodiesel (B100) and Blends of Biodiesel with Middle Distillate Fuel Oil (Accelerated Method)


We perform testing by ASTM D7462 to evaluate the oxidation stability of biodiesel and biodiesel blends by simulating storing the fuel for a year. This test measures the inherent stability of middle distillates (i.e., diesel fuel) blended with biodiesel under oxidation conditions.  Since most diesel fuel sold for on-road and off-road use now contains some quantity of biodiesel, this method is preferred to alternative methods such as ASTM D2274.  The test is performed by placing a measured quantity of fuel in a test tube and bubbling oxygen through the liquid while heating the liquid to 95°C for 16 hours.  Following the exposure, the liquid is filtered and the level of insoluble material is measured. 

We also perform oxidation stability testing by ASTM D2112ASTM D2272ASTM D2274ASTM D2440ASTM D525ASTM D873ASTM D942ASTM D943DIN 51587EN 15751IP 142IP 388IP 40ISO 12205ISO 4623, and ISO 7536. These different test methods use different instruments or procedures or are used for certain sample types. Click on the test method number to learn more about each test.

This test simulates storage of diesel fuel for one year.  A result of less than 1.5 mg/100 ml is generally considered acceptable.

Contact us today to receive a quote for your biodiesel testing.

Sample quantity required: 1 liter (1000 ml)

For additional information on this test method or to purchase a copy of the method, please click HERE to open a new window and visit the ASTM website.