jjp8182
Platinum Member
Thanks for all the comments. I did not know diesel didn't go bad over a period of time. My containers all have vents and I've never noticed a condensation issue.
As previously noted, that can depend on the diesel (which isn't as uniform of a composition from country to country as one would think) - and the storage conditions. .....and how long you're wanting to store it.
Most research that I've seen would indicate that even under "ideal" storage conditions (kept dry and below 70°F) diesel will last 6 to 12 months at most without a stabilizer. Just for consideration: when it comes to really long term storage even engine oils need to be considered as they (like fuels) will break down (or possibly become contaminated by microorganisms look for a meal). Unrefined oil may last for millions of years underground, but refined oils and fuels were designed for a specific purpose and given time they aren't likely to - or won't- be appropriate for that purpose.
Personally living in Alabama, I add stabilizers to the diesel year round with the amount of stabilizer varying per season (how much I'll be using it) and stabilizer manufacturer's recommendations. Since I'd not sure I'd want to deal with the long-term storage maintenance I think I'd run at least a tank to a tank and half of fuel through the system a year at minimum - and keep an eye on the engine oil (or follow a/the time-based oil change interval rather the running-hour-based one).
Other than that the batteries and tires would also need to be watched (or removed). ....basically all the sorts of things militaries/governments tend to do when putting a vehicle (or major sub-components like engines) into storage for years.