Fuel polishing is a process used to clean and condition fuel, removing contaminants such as water, sediment, rust, and microbial growth that can accumulate in fuel storage tanks. This preventive maintenance procedure is crucial for ensuring the fuel's quality, enhancing engine performance, and extending the lifespan of the storage system. By passing the fuel through a series of filters and separators, fuel polishing helps in maintaining the integrity of the fuel, preventing clogging of filters, and reducing the risk of engine failure.