Short for Proposed Category-11, PC-11 was the developmental title for the new generation of heavy-duty diesel engine oils. The initial proposal for a new category was made by engine manufacturers to oil marketers and API in 2011, and when accepted PC-11 was born.
When it was determined that two new oils would be launched within this new category, the titles PC-11A and PC-11B were introduced to distinguish between the products.
Both were used as working titles for the new oils until January, when CK-4 and FA-4 were approved as the industry’s newest oils by API. The PC moniker has been shelved, not to be seen again until development on another future category begins.
“We’ve moved past PC-11 now,” says Dan Arcy, OEM technical manager at Shell. “We’re addressing the new oils by their category names.”
To return to July’s cover story on trucking new engine oils, please CLICK HERE.