How to Store Gasoline & Fuel Safely Long-Term
Fuel is the prep everyone forgets until the pumps run dry — which happens within hours of any warning. Here's how much to store, what to keep it in, how to keep it fresh, and how to do it safely.
Key takeaways
- A common baseline is ~20 gallons (four 5-gallon cans) — more if you run a gas generator.
- Use durable steel NATO jerry cans.
- Treat with a storage stabilizer and rotate every six months.
- Top off vehicles early when an event is on the horizon.
How much fuel to store
Start by sizing fuel to a job: the amount needed to reach your long-term bug-out location, plus a margin. For many people that's around 20 gallons — conveniently four 5-gallon cans. If you depend on a gasoline generator, plan for considerably more, which is exactly why multi-fuel generators are worth it: reserve gasoline for transportation and run the generator on propane or natural gas.
Containers: steel jerry cans
Buy quality once. Steel NATO-style jerry cans seal tightly, resist UV and impact, and last decades. Four 5-gallon cans are easy to handle, rotate, and transport. Label each with its fill date.
Stabilizing & rotating
Gasoline starts to break down in months. Add a fuel stabilizer such as STA-BIL Storage as you fill each can, keep them sealed and cool, and rotate every six months by pouring the oldest into your vehicle and refilling. The rotation habit is the whole game — fuel you never cycle is fuel you can't trust.
Top off before an event
Whenever there's a known event on the horizon — hurricane, winter storm, wildfire, civil unrest — keep your vehicle tanks topped off. Fuel stations dry up within hours once large numbers of people rush the pumps, and pumps stop entirely when the power fails. The full tank you already have beats the one you're queuing for.
Fuel storage safety
- Store fuel in a cool, ventilated space away from living areas and any ignition source (water heaters, furnaces, pilot lights).
- Keep it away from oxidizers — never near pool shock (calcium hypochlorite) or other chemicals.
- Leave a little headspace; fuel expands with temperature.
- Follow local codes and quantity limits for home fuel storage.
- Keep a fire extinguisher nearby and don't store fuel in occupied basements.