What does an overhaul entail in engine maintenance?

An overhaul in engine maintenance involves comprehensive repair work aimed at restoring the engine to optimal functionality. This process can include a variety of tasks such as disassembling the engine, inspecting and replacing worn components, cleaning parts, and reassembling the engine. The goal is to ensure that all parts are functioning correctly and efficiently, extending the lifespan of the engine and improving its performance.

This process is much more extensive than simply replacing the engine entirely, which would not qualify as an overhaul but rather as a replacement or substitution. Regular oil changes and inspections are part of routine maintenance, not a complete overhaul, as they do not involve the in-depth repairs that an overhaul entails. Updating engine software also does not involve physical engine components and is more about enhancing engine management systems, rather than the mechanical restoration found in an overhaul.