How often should recirculation be performed?

• A. Weekly
• B. Monthly
• C. Daily first thing
• D. Annually

Answer: (C)

Recirculation is used to keep storage fuel clean and the system ready by moving fuel through filtration to remove water, sediment, and any settled contaminants. Doing this first thing each day ensures the fuel in the distribution system is refreshed and primed before operations begin—pumps and filters are clear, and moisture or particulates from overnight are captured early. This daily routine helps prevent line fouling, water contamination, and microbial growth in stored fuel, which could otherwise lead to poor performance or equipment damage. Waiting longer, like weekly, monthly, or annually, increases the chance of contaminants building up and causing issues when you start using the system.