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About product and suppliers:
        Alibaba.com offers 1,150 10w40 oil products. About 57% of these are lubricant, 35% are lubricants. 

A wide variety of 10w40 oil options are available to you, such as free samples. 

There are 1,089 10w40 oil suppliers, mainly located in Asia. The top supplying countries are China (Mainland), United Arab Emirates, and Russian Federation, which supply 58%, 9%, and 4% of 10w40 oil respectively. 

0w40 oil products are most popular in Africa, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 497 with ISO9001, 188 with ISO14001, and 185 with ISO/TS16949 certification.