On December 1, 2016 a new oil performance category will be introduced for heavy-duty diesel engines. While in the development stage, this new category was referred to as Proposed Category 11, or PC-11.
As the 11th evolution of its kind, PC-11 oils were developed in response to national emissions standards, encouraging engine manufacturers to design the next generation of clean, fuel-efficient diesel engines.
PC-11 will be divided into two formulations, one that will provide an immediate upgrade in protection, and one geared towards future diesel engines. Starting this December, you can make the switch to API CK-4 oils for an upgrade in oxidation stability, shear stability and aeration control. By 2017, many on-highway OEMs in North America will likely recommend API FA-4 oils in new diesel engines.
It is estimated that engines designed to use API FA-4 oils and meet 2017 standards may save vehicle owners a combined total of about $170 billion in fuel costs and 1.8 billion barrels of oil over the lifespan of vehicles made between 2017 and 2025.
For two decades, Valvoline™ and Cummins have partnered to share technology and testing facilities to develop premium diesel engine oils.
The collaboration has resulted in specialized tests to evaluate wear and corrosion, which were crucial in proving that PC-11 is effective and safe for diesel engines.