How Long Can Diesel Fuel Sit Before It Goes Bad?

What happens when diesel fuel sits for a long time?

When diesel goes bad and gets old, gum and sediment form.

This reaction happens because of the reaction of the fuel and oxygen together.

This sediment blocks up the filters and sometimes leads to an engine stalling.

Also, the sediment and gum don’t burn well and often lead to carbon deposits on the injectors..

Does diesel fuel go bad from sitting?

There are, however, risks associated with storing diesel on-site. First, the quality of the diesel is not perpetual — diesel fuel can go bad over time. The fuel can only be stored from 6 to 12 months on average — sometimes longer under the best conditions.

How can you tell if diesel is bad?

Signs Diesel Fuel Has Gone BadGelling or sludge.Darker color.Sediment.Fuel filters clogged frequently.Poor fuel efficiency.Damaged fuel pumps.Harder to start machine.Black smoke.More items…•

How long does diesel last in a car tank?

As for diesel, it can remain usable for between six and 12 months before becoming ‘gummy’ which, if used, can clog up filters and cause you issues with your engine.

How do you revive old diesel fuel?

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

What causes white smoke on a diesel?

White smoke in diesel engines is usually the last color you want to see, particularly on gas cars. … This might be caused from the engine being too cool to burn the fuel, low compression in cylinder(s), fuel injection timing, defective fuel injector, burnt out glow plugs, clogged air filter or poor quality fuel.

Should I leave my diesel running while fueling?

In practice, refueling with diesel fuel, while the engine is running, is non-hazardous. If you drop a lighted match into a pool of diesel oil, the match will go out. It is very hard to ignite the oil in bulk. It has to be in a very hot environment, of atomised by the car’s injectors, before it will ignite.

What does bad diesel smell like?

Diesel exhaust has always had a significant smell compared to the smell of a gasoline engine’s exhaust, but in general it shouldn’t exhibit much of a sulfurous smell. A sulfur or rotten egg smell is exactly that, the presence of hydrogen sulfide in the exhaust system.

What happens if you run a diesel engine out of fuel?

When you run out of diesel, the pump begins to pull in air, which can completely destroy it along with the injectors. When your truck gets air bound, the entire fuel system can fill with air and firing your engine back up becomes a much more difficult process.

Should I keep my diesel tank full?

Each time you neglect pumping gas, gunk from the bottom of the fuel tank could get caught in various components of the vehicle. This sediment in your tank can foul the fuel filter. … Because of this, maintaining a full tank with a diesel engine is even more critical than with a gasoline engine.

Can I use old diesel fuel?

Yes you can use it. Unlike gasoline, diesel is just fine to use after many years, just so long as it’s clean.