By simply applying a small amount of PRI-D for diesel or PRI-G for gasoline at the time of storing, the fuel will remain refinery fresh and stable. This freshness will hold for months, even years. With periodic re-treating of the fuel, it will remain fresh indefinitely.

Power Research Inc. is the industry leader in preserving fuel integrity for emergency power systems. PRI-D and PRI-G enjoy widespread application by operators of data facilities, hospitals, office buildings, fire departments, radio and television stations, cell phone sites, and even standby generators at nuclear power plants.
With PRI-D and PRI-G, operators of emergency generators can be assured of smooth, quick start-ups and continued, uninterrupted operation when it is most critically needed. These same chemistries are available in consumer packaged sizes, suitable for smaller engines and equipment. So do not wait to safeguard your power system. Treat your fuel with PRI today.
Emergency power is a critical lifeline when disaster strikes. But experience has shown that the fuel stored to operate the emergency power units is too often neglected.
Fuel quality can quickly deteriorate and fuel can become unusable when stored for months and years at a time. When called upon during a disaster or emergency, this degraded fuel will disable engines - plugging filtration systems, damaging engine components with excessive carbon - and in some cases - refusing to ignite.
This neglect of stored fuel is one of the weakest links in disaster preparedness. It is estimated that more than one half of the power generator failures that occur in emergencies can be directly attributed to fuel degradation.
This stored fuel can be preserved and insured against such deterioration and performance failure. The solution is application of industrial grade PRI-D for diesel fuel, or PRI-G for gasoline, to the stored fuel.
Once opened, fuel treatment will stay good for up to 3 years. Unopened, stays good indefinitely.

Treatments:
Each 16oz. unit treats 256 gallons
Each 32oz. unit treats 512 gallons
Each 1 Gallon unit treats 2,048 gallons
Each 5 Gallon unit treats 10,240 gallons