In October 2016, Ford Motor advised that it only recommends oils that meet Ford Material Engineering Specification WSS-M2C171-F1 for use in any of its diesel engines. In December, Ford released a list of over 200 acceptable oils. We published an updated list in the May 22, 2017 issue of the OEM/Lube News and are now publishing an updated list, published by Ford Motor on June 12, 2017. To view, click here Ford Motor Further Updates List of Acceptable DEOs.