Extending the Storage Life of Diesel Fuel

Diesel fuel does not last forever. Over time, oxidation, water, heat, microbial activity, and contamination can cause diesel fuel to darken, form sediment, plug filters, and lose performance.

Main Causes of Storage Problems

• Oxidation from exposure to air.
• Water from condensation, leaks, or poor tank maintenance.
• Heat and temperature swings.
• Microbial growth at the fuel/water interface.
• Dirt, rust, or other tank contamination.

How to Help Stored Fuel Last Longer

• Keep fuel tanks clean and dry.
• Limit water entry and drain water when needed.
• Store fuel away from excessive heat when possible.
• Use a stabilizer before fuel problems develop.
• Rotate stored fuel when possible.

Where Preserve Fits

Opti-Lube Preserve is designed for stored fuel applications, including bulk tanks, backup generators, seasonal equipment, and fuel that may sit for extended periods.

Need help choosing? Start with Opti-Lube diesel fuel additives or review our FAQ for dosing, storage, and compatibility questions.