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PRI-G Gas Treatment and Fuel Preservation Case 12 Quarts PRIGx12

Was: $479.00
Sale Price: $333.95
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Product InformationStore Part Number: PRIGx12


PRI-G is super concentrated; one quart treats 512 gallons, and is a complete fuel treatment that improves any type of gasoline, enabling it to perform to maximum potential. PRI-G’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 reduced
Improved Engine Performance – PRI-G works chemically within all gasoline to improve the combustion process. Improved combustion means improved engine performance. 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. It is also extremely effective at cutting harmful emissions. Smog tests are no longer a challenge.

Reduced Maintenance Costs – PRI-G’s proprietary, refinery-grade chemistry is unsurpassed at preventing carbon deposits and fuel system fouling. Your engine will remain cleaner and last longer, which means maintenance costs are significantly reduced. Keep your car, boat, or RV in great shape for years to come!

Extended Storage Life – Properly treated with PRI-G, your gasoline will stay fresh in storage for months and even years at a time. Super Concentrate PRI-G Complete Gasoline Fuel Treatment You’ll be assured a fast start next season simply by treating your fuel with PRI-G prior to storage. PRI-G goes a step further, actually restoring old fuel to refinery-fresh conditions. If you are storing gasoline for any period of time, you can’t afford to be without PRI-G.

Super Concentrated – PRI-G is super concentrated, treating fuel at a 1:2000 ratio. This means PRI-G is extremely cost effective to use. Get the most out of your gasoline for only pennies a gallon!

Safe To Use – PRI-G’s enhanced thermal stability chemistry works within the fuel instead of altering it, which means the product is completely safe to use. Fuel specifications aren’t changed, so engine warranties are not voided! PRI-G is safe and effective in both four stroke and two stroke engines. Use PRI-G today to get the most out of your gasoline and your engine.

This product has been used by industrial fuel customers for years, although not widely known in the consumer market it is the best fuel treatment available no matter the price. I have personally used both the PRI Diesel and Gasoline treatments since 1993 and have never encountered a fuel related problem in any of our equipment since that time. We feel that one of the greatest assets of PRI Fuel Treatments is the long term fuel storage and the ability to recover old stored fuels. If you have used Sta-Bil you will find that PRI is a far superior product and less costly per gallon to use.


  • Improved Engine Performance
  • Reduced Maintenance Costs
  • Extends Fuel Storage Life
  • Super Concentrated - treating fuel at a 1:2,000 ratio.
  • Safe To Use - With PRI no fuel specifications are changed, therefore PRI meets all major engine manufacturer fuel specifications – warranties are not voided!


*Available within the Lower 48 United States and Canada only.

Tech Specs

  • Weight: 24 lb
  • Manufacturer: Power Research Inc/PRI
  • Shipping Weight (lb.): 25 lb
  • Manufacturer Part #: PRIGx12
  • Made In: USA

Reviews and Ratings

5.00 Average
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Rated 5.00/5 Stars from 2 customer reviews.

Do you own the PRIGx12? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

PRI-G Gasoline Treatment
Pros: I've been using PRI-G for several years now. Working in a "JUNK YARD" we add it to all the fuel in our storage tanks. You never know how long fuel has been sitting in a car before someone decides to junk that car.
Cons: Haven't found any yet.
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Written by on Jan 11, 2012. Ownership: Use regularly. Knowledge Level: Electricity doesn't scare me.. usually — (1410 of 2798 customers found this review helpful
I have been using PRI-G to stabilize gas in a 300-gallon tank for ten or so years. I use the gas in various small engines - lawn mowers, chain saws, a generator, etc. I typically use 30 to 50 gallons in a year and replace that gas with fresh gas once a year and treat the tank with PRI-G at the same time. As far as I can tell the gas in the tank stays fresh indefinitely with an annual treatment and all my small engines continue to run great.
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Written by on Oct 18, 2020. Verified Purchase

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Order Line: 1-800-362-5397
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Tech Help: 541-474-4421
Fax: 541-471-6014
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Grants Pass, OR 97526
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