FA-4 Oil: How Well Does It Really Protect Your Heavy-Duty Truck Engine

API released the FA-4 engine oil spec more than two years ago. And while lubricant manufacturers stand behind the benefits of FA-4, slow OEM adoption and questions around engine protection with lower viscosity oils means some fleets are debating making the switch. 

Watch as technical experts Tony Negri and Shawn Ewing from Phillips 66 Lubricants discuss industry perceptions of FA-4 and share results from recent engine teardowns of Detroit Diesel, PACCAR and Volvo engines. See how FA-4 oil really protects and performs in hardworking engines in the real world. 

Key Takeaways: 

• What are the differences between FA-4 and CK-4 engine oil
• Why the industry has been slow to adopt FA-4
• What engine parts look like after nearly 1 million miles on FA-4 oil

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