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PRI is super concentrated; one quart treats 512 gallons and is a complete fuel treatment that improves any type of fuel, enabling it to perform to maximum potential. PRI’s industrial strength, enhanced thermal stability chemistry reacts with fuel upon contact, and provides multiple benefits: Engines perform better and last longer Engine power increased and fuel economy realized Fuel stays fresh months, even years. Hesitation, knocking, and pinging will be greatly reduced with PRI products.

PRI Gasoline treatmentImproved Engine Performance: PRI-G works chemically within all gasoline to improve the combustion process. You will realize increased power from your engine. At the same time, you will enjoy greater fuel economy. PRI-G reduces the hesitation, knocking, and pinging that is common in gasoline engines.
PRI Diesel TreatmentImproved Engine Performance – PRI-D works chemically within diesel fuel to improve the combustion process. Improved combustion means improved engine performance. PRI-D is also extremely effective at reducing harmful emissions, including smoke opacity, NOx, and SOx.





*Exclusions may apply for large, oversize items.  Flat Rate shipping is for the lower 48 states only.

Order Line: 1-800-362-5397
M–F 6 am–5 pm PST
Tech Help: 541-474-4421
Fax: 541-471-6014
276 Tech Way, Suite A
Grants Pass, OR 97526