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PRI-D Diesel Fuel Treatment and Preservation 2 Quarts

Was: $80.00
Sale Price: $69.95
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Product InformationStore Part Number: PRID64oz


PRI-D is a super concentrate; one quart treats 512 gallons, and is a complete fuel treatment that improves all diesel fuels enabling them to perform to maximum potential. PRI-D will stabilize biodiesel from B-5 to B-20. PRI-D’s industrial strength, enhanced thermal stability chemistry reacts with fuel upon contact, and provides multiple benefits:
Engines perform better and last longer
Increased power and fuel economy
Fuel stays fresher longer
Tanks and fuel lines remain free of slime and sludge

Improved Engine Performance – PRI-D works chemically within diesel fuel 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-D is also extremely effective at reducing harmful emissions, including smoke opacity, NOx, and SOx.

Reduced Maintenance Costs – PRI-D is a highly effective preventative maintenance tool. PRI-D’s proprietary, refinery-grade chemistry is unsurpassed at preventing carbon deposits and fuel system fouling. Your engine will remain cleaner and last longer. In addition, the tank slime and sludge that diesel fuel users commonly encounter is eliminated!

Extended Storage Life – Properly treated with PRI-D, your diesel fuel will stay fresh in storage for months and even years at a time. Tests have shown where PRI-D has gone a step further, actually restoring old fuel to refinery-fresh conditions. If you are storing diesel fuel for any period of time, you can’t afford to be without PRI-D.

Super Concentrated – PRI-D is super concentrated, treating fuel at a 1:2,000 ratio. This means PRI-D is extremely cost effective to use. Get the most out of your diesel fuel for only pennies a gallon!

Safe To Use – PRI-D’s enhanced thermal stability chemistry works within the fuel instead of altering it, which means the product is completely safe to use. PRI-D contains no potentially damaging Cetane improvement additives or harsh solvent chemistries. No fuel specifications are changed, therefore PRI-D meets all major engine manufacturer fuel specifications – warranties are not voided! Use PRI-D today to get the most out of your diesel fuel 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 Power Service or Lucas you will find that PRI is a far superior product and less costly per gallon to use.



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

Tech Specs

  • Weight: 3.4 lb
  • Manufacturer: Power Research Inc/PRI
  • Shipping Weight (lb.): 5 lb
  • Manufacturer Part #: PRID64oz
  • Made In: USA

Reviews and Ratings

5.00 Average
5 Stars 3
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 3 customer reviews.

Do you own the PRID64oz? 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-D Diesel Treatment
Pros: This stuff is amazing! It rejuvenated 78 gallons of 2 year old diesel and the truck performed like it had new fuel. I recommend this product highly
Cons: It's all good. Nothing negative to say
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Written by on Mar 23, 2012. Ownership: Just Bought. Knowledge Level: Genius is my way of life — (183 of 355 customers found this review helpful
Great Stuff
I have been purchasing this for years from Battery Stuff for both my gas and diesel equipment.
It works better than any other fuel treatment that I have used and I have tried them all.
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Written by on May 21, 2020. Verified Purchase — (2 of 4 customers found this review helpful
The Best
PRI-D and PRI-G are the best on the market. Try it it works.
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Written by on Nov 08, 2020. Verified Purchase — (2 of 3 customers found this review helpful

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