Most diesel engine owners want to do everything possible to protect a newly rebuilt engine.
That often leads to a common practice after startup: Letting the engine idle.
At first glance, it seems like the safe thing to do. The engine is running, oil pressure is present, temperatures are stable, and everything appears normal.
The problem is that proper engine break-in requires more than simply running the engine.
According to the testing featured in Black Series Lab Episode 2, extended idle time during break-in may actually work against one of the most important processes occurring inside a freshly rebuilt engine: piston ring seating.
Continue reading Black Series Lab Episode 2: Why Idling a Fresh Rebuild Can Ruin Ring Seating