Mixing Synthetic and Conventional Motor Oils

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Question:

Mixing Synthetic and Conventional Motor Oils

Can you ever blend synthetic oils and conventional oils? If so, what is the ratio?

-- Julie Patten, Des Moines, IA

Answer:

Yes, synthetic oils can be blended with conventional oils. Several companies, including ExxonMobil, market synthetic blends which are a combination of synthetic and conventional oils. In the case of ExxonMobil, the ratio of synthetic to conventional oil in these products is considered proprietary information.


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