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Address Conflicting Advise on Whether Mobil 1 Extended Performance Can Be Used in Diesel Engines
 
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Question:
Address Conflicting Advise on Whether Mobil 1 Extended Performance Can Be Used in Diesel Engines
The Mobil 1 Extended Performance oil quart bottle has written on it for GASOLINE ENGINES ONLY. But on the website it says can be use in diesel engines that meet the requirements. Is that statement correct?
-- Salvius Pierre, Jamaica, NY
Answer:
Since Mobil 1 Extended Performance meets or exceeds the most current requirements of the International Lubricant Standardization and Approval Committee (ILSAC) for gasoline engines, the bottles carry on the label the API Certification Mark "Starburst" that reads “ For Gasoline Engines – American Petroleum Institute  - Certified.” The word “ONLY” that you mention is not marked on the labels since Mobil 1 Extended Performance is also recommended for diesel engines that require an API CF specification.
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