Because diesel fuel and gasoline have a limited shelf life, you might be wondering about propane. How long can you safely store it? If you’ve had some propane for a while, it might still be good depending on the type of tank containing it. Here, Fuelman Inc in Honolulu, HI, shares a guide to propane shelf life along with other helpful information about propane storage.

How Long Does Propane Last?

Propane is an ideal emergency fuel because it actually never goes bad. When stored properly, it can last indefinitely. But if this is the case, why do propane tanks come with expiration dates?

The Tank Makes the Difference

While it’s true that propane never loses the qualities that make it propane, the tanks in which it’s stored can deteriorate. Small propane cylinders are usually dated for a year’s time, but larger galvanized tanks can last up to 30 years before failing. Because they do not hold water or oxygen, these steel tanks don’t rust from the inside, but where they’re exposed to the elements, they can rust on the outside. If you have galvanized propane tanks, store them in a cool, dry place.

But there are other propane tank materials that are even more durable than galvanized steel. The absence of steel in aluminum tanks will prevent them from rusting even on the outside. Composite tanks are another sturdy option. Made from a combination of fibers and plastic resin, they will never rust and can even be made transparent so you can check how full they are.

Valves Matter Too

Valves and fittings can also decline over time, so avoid rubber hoses or low-quality materials. When your propane cylinders are made with the best fittings, you won’t have to worry about leaks for a very long time.

As long as there are no leaks in your tanks or valves, the propane inside will not evaporate away. That’s why people in Honolulu go to Fuelman Inc for reliable, high-quality tanks in addition to wholesale fuels. This company even offers bulk diesel and propane delivery. Learn more by calling them today at (808) 842-3835 or by visiting their website.