Is there 5W-40 Conventional?

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1,050
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Calif.
Since they make 10W-40, 15W-40 conventional, is there such a thing as conventional 5W-40. If so who makes it and where to find it.
 
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2,480
In the U.S., a Group III is a synthetic and even in Europe a Group III is a HC/Semi-synthetic oil. Can someone tell me when a Group III became known as a Conventional/Mineral oil???
 
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