Fuel Dilution of Oils

Method Gas Chromatography
Standards ASTM D 7593

What is it used for?

In-use engine oils are often subject to some degree of fuel dilution during service and not pose an issue, although excessive fuel dilution can have a massive impact on performance, potentially leading to component wear and eventual crankcase.


How does it work?

Testing by Gas Chromatography provides a means of determining the level of fuel dilution in the engine’s lubricating oil, enabling the appropriate action to be taken.


What do the results tell us?

Results are presented in terms of % content of fuel in the sample.  Flash point and kinematic viscosity are also good conformational tests for this method.


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