Time to get a head start on what's coming down the pipe for new diesel oils again with the introduction of PC-11 oils.

Forget CJ4 now we have 2 more designations coming for 2017 and newer diesel engines and the other is backwards compatible.

 

http://www.forconstructionpros.com/article/12151385/new-pc-11-diesel-oil-update-what-to-know-with-one-year-to-go

interesting, also a lot of other good articles in that link.