| Small emergency reserve | 5–16 US gal (19–61 L) | Approved HDPE or coated steel | Gasoline, diesel, kerosene | Good when the container is specifically rated for the fuel and portable use. Gasoline requires a fuel-approved container with a secure closure. | Choose a manageable size, flame-resistant construction, secure cap, and clear fuel identification. Keep away from ignition sources and occupied areas. |
| Workshop or farm equipment supply | 30 US gal (114 L) | Carbon steel with suitable internal lining, or approved HDPE | Diesel, kerosene, heating oil | Generally compatible if the drum is rated for petroleum fuels. Steel offers strong impact resistance; HDPE provides corrosion resistance but must be approved for the fuel and service conditions. | Confirm the drum's temperature range, closure type, stacking limits, and resistance to ultraviolet exposure. Use secondary containment where spills could reach soil or drains. |
| Routine diesel storage | 55 US gal (208 L) | Carbon steel or approved HDPE | Diesel fuel, including commonly used low-sulfur diesel grades | Strong compatibility with properly manufactured and tested petroleum-fuel drums. The drum should remain sealed, clean, and protected from water contamination. | Allow headspace for thermal expansion, inspect for corrosion or deformation, and use a pump and hose compatible with diesel. Rotate stored fuel according to its condition and storage environment. |
| Longer-term fuel reserve | 55 US gal or larger (208 L or more) | Coated steel or certified fuel-storage tank | Diesel and kerosene; gasoline only where specifically permitted | Better suited to fuels with lower vapor pressure. Gasoline storage presents higher fire and vapor risks and may require specialized equipment, ventilation, separation distances, and permits. | Review local fire, environmental, and occupational-storage requirements before installation. Include spill control, secure access, grounding or bonding where required, and appropriate ventilation. |
| Ethanol-blended gasoline | 5–55 US gal (19–208 L) | Fuel-approved HDPE or compatible coated steel | Gasoline containing ethanol, only within the container's stated rating | Compatibility depends on the exact fuel blend and container approval. Ethanol can absorb water and may affect some seals, coatings, and plastics. | Verify the permitted ethanol concentration, gasket material, closure design, and storage duration. Keep the container tightly closed and minimize exposure to moisture and heat. |
| Corrosion-sensitive environment | 16–55 US gal (61–208 L) | Approved HDPE or stainless steel where specified | Diesel, kerosene, and selected petroleum fuels | HDPE does not rust, while stainless steel can provide high chemical resistance. Neither option is automatically suitable for every fuel or pressure condition. | Check permeation, UV resistance, impact strength, static-control requirements, and the compatibility of all fittings, seals, pumps, and hoses—not only the drum wall. |
| Indoor or covered storage | 16–30 US gal (61–114 L) | Approved steel safety drum or certified fuel container | Diesel, kerosene, and limited quantities of gasoline where legally allowed | Suitable only when the storage location, quantity, ventilation, and container type meet applicable fire-safety requirements. | Do not store fuel near heat, sparks, electrical ignition sources, exits, or incompatible chemicals. Keep containers upright and provide a stable, leak-resistant surface. |