Fuel Quality
The quality of diesel fuel is determined by its chemical composition. Diesel fuel that meets the ASTM D975 specification is considered to be good quality fuel. Fuel that does not meet this specification may contain higher levels of contaminants, which can shorten its shelf life.
Storage Conditions
Diesel fuel should be stored in a cool, dry place, away from direct sunlight. The ideal storage temperature for diesel fuel is between 50 and 80 degrees Fahrenheit. Higher temperatures can cause the fuel to deteriorate more quickly. Diesel fuel should also be stored in a sealed container to prevent the entry of oxygen and moisture, which can also cause the fuel to deteriorate.
Contaminants
Diesel fuel can become contaminated with a variety of substances, including water, dirt, and bacteria. Water is the most common contaminant of diesel fuel. Water can enter the fuel through condensation, leaks, or improper handling. Dirt and bacteria can enter the fuel through contaminated storage tanks or fuel lines. Contaminants can cause the fuel to deteriorate more quickly and can also lead to problems with the engine.
Shelf Life
The shelf life of diesel fuel can vary from 6 months to 2 years, depending on the factors discussed above. Good quality fuel that is stored properly can last for up to 2 years. Fuel that is not stored properly or that is contaminated may have a shorter shelf life.
It is important to note that diesel fuel can deteriorate over time, even if it is stored properly. Therefore, it is always a good idea to use diesel fuel as soon as possible after it is purchased.
