How long before diesel goes bad?

Well, without diesel fuel additives, diesel can go bad in as little as 30 days before this oxidization process becomes unwieldy, creating deposits that can damage fuel injectors, fuel lines, and other system components which will hurt fuel economy and performance.

Is 10 year old diesel fuel still good?

‘ In reality, there is no expiration date on diesel per se, but the performance of your diesel fuel is affected the longer you store it. In fact, storing diesel without properly treating it can lead to all kinds of issues, not only for the fuelitself, but for any vehicle you decide to put the fuel in later.

How can you tell if diesel is bad?

What Are The Symptoms?
  1. Fuel Has Turned Dark.
  2. Shortened Fuel Filter Life.
  3. Fuel Degrades During Operation – Signs of microbial and fungal contamination.
  4. Stench Coming From the Fuel Tank.
  5. Ruined Fuel Injectors (Corroded)
  6. More Exhaust Smoke than Usual.
  7. Floating Contaminants or Sludge in the Tank.

What is the shelf life of diesel fuel?

between six and 12 months
On average, gasoline has a shelf life of three months, while diesel, if kept cool and dry, can be stored for anywhere between six and 12 months.

Is it OK to use old diesel fuel?

Diesel fuel goes bad when it is exposed to something in the environment that accelerates the natural processes which attack its quality. … Fuel that’s darkened and full of sludge or varnish won’t burn properly, it makes black smoke, and may not even start an engine at all if it is bad enough.

How do you rejuvenate old diesel fuel?

How to Recondition Old Diesel Fuel
  1. Pour fifty gallons of old diesel fuel into the fifty gallon drum.
  2. Measure 3.125 oz. of PRD-D or 280 oz. …
  3. Add the fuel re-conditioner directly to the stored fuel storage if possible. …
  4. Allow the old diesel to sit for a day or two. …
  5. Use the fuel as if it were fresh from the pump.