In 2019, General Motors introduced the Duramax 3.0 diesel engine in its lineup, which could outperform or match its rivals in power and towing capacity. Several years later, in 2023, the inline ...

This was big news. The 4.5L Duramax, also known as the LMK, was supposed to be GM’s answer to Ford’s Power Stroke and Ram’s Cummins. A small but mighty diesel V8 built for half-ton trucks. But the ...