so i'm sure the diehards will stick with the 15-40, but food for thought.. http://farmindustrynews.com/farm-equipment/what-s-your-engine-oil-iq#slide-8-field_images-71081

 

some would/could do well to read the bob's the oil guy's information.

 

Comments welcome.

It will be interesting to see how this all ays out. As of the latest info at http://www.whatispc-11.com/ there will be 2 types of oil, one for current and future engines built specifically for 30w oil and another spec similar to CJ4 for engines that call for heavier viscosity. Even the website I linked recommends "always following your manufacturers recommended viscosity." Many new engines including the DD in the above video and select Cummins engines are currently coming from the factory with 30w oil.

http://www.whatispc-11.com/new-api-oil-standard-may-ready-2017

 

"One of the concerns with any new oil category is its backwards compatibility. Arcy says it is too early to tell whether the low-viscosity version of PC-11 will be backwards compatible and added that we are as much as a year away from being able to discern that."

 

 

 

Direct quote taken from the last paragraph of the link above.