Prist Hi-Flash Hi-Flo™ Anti-Icing Fuel Additive

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20 oz5 GallonCase 24/ 20 oz55 Gallon Drum
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Prist® Hi-Flash® Hi-Flo™ aerosol cans are now available with a redesigned trigger dispensing system that makes them easier and safer to use. The safety trigger gives the user control of additive flow with instant on and off dispensing. Now the trigger dispensing system comes pre-mounted on the can which eliminates leaks at the valve connection. This means less waste, no drips and no spills.

Prist® anti-icing fuel additive comes in a wide range of packaging, making it easy to choose the amount of product and dispensing method for your application.

The additive pilots ask for by name.

Directions for Use
  • 1. Remove and dispose of red safety tab on top of trigger spray nozzle.
  • 2. To start flow, squeeze trigger on spray nozzle and continue holding trigger during fueling: To stop flow, release trigger.
  • 3. Use can upright and start flow of Prist after refueling begins and stop flow of Prist a moment before refueling stops.
  • 4. Invert can and squeeze trigger for 2 seconds to clear dispensing tube. Caution: Assure that Prist is directed into and blends with flowing fuel from refueling nozzle. Do not allow concentrated Prist Fuel Additive to contact exterior of fuel tank or coated surface of aircraft.
Refer to advice of aircraft or engine manufacturer as to the suitability of use
  • When used as directed, the contents of this can will provide the recommended concentrations of 0.1% by volume minimum to 0.15% by volume maximum. Contents are adequate for a minimum of 105 gallons and maximum of 155 gallons of fuel within concentration range.
  • Instructions provided in aircraft and engine operating manuals regarding the use of manufacturer recommended fuel system icing preventative measures must be strictly followed.
Storage and Disposal
  • Store away from direct sunlight, and other sources of heat. Discard containers in trash. Open dumping is prohibited. Waste resulting from use of this product may be disposed of on site or at an approved waste disposal facility. Dispose of empty container in a sanitary landfill, or by other approved procedures by state and local authorities.
Physical Hazards
  • Use can upright. Avoid breathing vapors. Avoid contact with eyes, skin and clothing. Keep away from heat, sparks and flame. Use only with adequate ventilation. Do not swallow. Use goggles or face shield or rubber gloves when handling.Not for food, drug, pesticide or cosmetic use. For use only as an anti-icing agent in aviation fuel. For use in enclosed systems only.
  • Contents under pressure. Do not puncture. Do not use or store near heat or open flame. Exposure to temperatures above 130* F may cause bursting.
Available in the USA only.
California Prop 65 Warning Symbol

WARNING: This product may expose you to chemicals including Ethanol, 2-methoxy, 2-ethoxyethanol, Methanol, which is / are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to

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Great product

Dave A Verified Purchase


November 11, 2023

It’s Prist so, not much to say about it…It took a long time to get a case(over a month) so, had to buy (24) cans.

Aviation T Verified Purchase


November 2, 2021


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is there a shelf-life on Prist?

No, there is no indicated shelf life for Prist Hi-Flash Hi-Flo Anti-Icing Fuel Additive.

Q: How many gallons of jet fuel does an ounce of Prist treat? Or how do you insure proper amount per treatment?

When used as directed, the contents of this can will provide the recommended concentrations of 0.1% by volume minimum to 0.15% by volume maximum. Contents are adequate for a minimum of 105 gallons and maximum of 155 gallons of fuel within concentration range.

Q: Is PRIST in the aerosol can considered dangerous goods?

Yes, the aerosol can of Prist is considered dangerous goods.

Q: Is the 5 Gallon pail of Prist Hi-Flash Hi-Flo fuel additive considered hazardous for air shipments?

Per MSDS sheet, No. 5 gallon pails are not regulated for shipments originating from our USA warehouses. (i.e. considered non haz).

The 5 gallon pails are considered hazardous goods in Canada.

Q: Do the 20 oz cans of Prist Hi-flash Hi-flo fuel additive come with a clip that attach to fuel nozzle for dispensing?

Yes, the can includes the metal clip that attaches to the fuel nozzle for dispensing.

Q: Can this Prist Hi-Flash Hi-Flo additive be used with 100LL?

Yes, Prist is safe with 100LL as long as the aircraft manufacturer allows it.

Q: When we do a sump draining for water after adding Prist at the last fueling, we drain all the prist out as it doesnt mix with the fuel but collects in the bottom. The fuel is Jat A-1

Thank you for sharing your process. We will post it to the Q+A.

Q: Does PRIST HI-FLASH HI-FLO ANTI-ICING FUEL ADDITIVE Part# 09-04436 conform to the MIL-I-27686?

No, Prist matches MIL-DTL-5470B.

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