What is fuel polishing?

If you store diesel for long periods of time in a metal tank it can become contaminated with water, tank corrosion and other matters. Fuel polishing is the process of cleaning the diesel to ensure it is as pure as necessary for powering a generating set. Large diesel generators may have a fuel polishing system installed alongside them to constantly move and filter the diesel. This service can also be provided for other generating sets without an onsite fuel polishing facility.