In the News

Karin Haumann, OEM technical manager of Shell Global Solutions spoke with SAE Media about the approaching proposed category 12 (PC-12) heavy-duty diesel engine oil category. PC-12 engine oils are in development and will be licensed for use on January 1, 2027. The current engine oil categories, CK-4 and FA-4, were introduced in 2016.

Development of the new category is necessary due to advancements in engine technology, and it aligns with stricter emissions regulations that begin in 2027, said Haumann, who serves as chairperson of the API new category development team. “As diesel engine technology evolves, they require oils that offer increased oxidation performance and wear reduction, can handle higher temperatures, and improve fuel economy,” she said. Lubricant producers also must meet reduced phosphorous and sulfated ash limits, which otherwise can compromise emission control systems and negatively impact fuel economy.

Oil analysis is a key part of a vehicle maintenance program that helps fleets proactively monitor engine health. By regularly checking oil samples for contamination, wear particles, and chemical composition, operators can detect early signs of engine issues before they lead to costly breakdowns. This predictive maintenance approach improves equipment reliability, reduces unplanned downtime, and extends the life of engines. Integrating oil analysis into routine maintenance schedules can lead to long-term savings and better operational efficiency.