What Are The Two PC-11 Sub-Categories And How Do They Differ?

This category will be split into two distinct viscosities: There will be a traditional high temperature/high shear viscosity (HTHS) and a lower HTHS viscosity, the latter targeted to achieve enhanced fuel economy.

CK-4 oils will have traditional HTHS viscosity. They will provide performance benefits exceeding today’s CJ-4 engine oils, including improved oxidation resistance, shear stability and aeration control to enhance engine performance and durability, while still retaining backward compatibility to satisfy older makes and models. CK-4 oils will be available in XXW-40 and XXW-30 viscosity grades and will be suitable for older on-highway engines. The XXW-30 applicability will mirror those of XXW-30 CJ-4 engine oils described above.

FA-4 oils will have lower HTHS viscosity. In addition to meeting the new category performance requirements, including improved oxidation resistance, shear stability and aeration control, FA-4 oils will be designed to provide enhanced fuel economy, but they will only be available in XXW-30 viscosity grade.

Compared to their CK-4 counterparts, FA-4 oils will likely have more limited backward compatibility. Each engine OEM will define the backward compatibility of FA-4 oils for their product line. Consequently, fleets that have engines that fall within the backward compatibility standard set by the OEM will be able to use FA-4 oils across their entire fleet.

We hope you will be as excited about using these new and advanced engine oils as we are about offering them to you.