GotQuestions? Lubricants

Q. What are the benefits of a semi-synthetic oil?

August 7, 2013

A. Semi-synthetic oil means that the finished lubricant contains both conventional- and synthetic-based oils. The amount of synthetic component can vary from product to product with no set rule as to how much synthetic base oil is used.

As a general rule, semi-synthetic oils can improve oxidation stability, have longer service life and in some cases perform more favorably when biodiesel fuels are used. Fleet managers need to consult with their suppliers to determine if a semi-synthetic oil can offer additional advantages for their equipment and operating conditions.