By DCB Editorial, January 26, 2026
GM is facing over 28,000 reported failures of its 6.2L V8 (L87) engines and is recommending thicker oil as a potential fix—but is that really enough?
Engineering Explained dives into the root causes of these engine failures, examines GM’s service bulletins, and analyzes real-world data, research, and test results.
Whether you’re curious about engine lubrication science, modern manufacturing challenges, or simply which oil is best for your vehicle, this video breaks down the issues and explains what the thicker-oil recommendation really means.
