ABOUT AVIATION FUELS & PRIST

 

There are many specifications that fuel and additive must meet to be approved for use;

PRIST® Hi-Flash™ is approved for use in by both ASTM D910 Specification for Aviation Gasoline (AvGas) and ASTM D1655 Specification for Turbine Jet Fuel.

It is also specifically authorized by the FAA and engine & airframe manufacturers.

As a fuel additive it also meets the following:

Jet Fuel and Aviation Gasoline specifications require that a list of criteria be met or exceeded before the product can be called AvGas or Jet Fuel.

 

AVGAS

AvGas is gasoline fuel for reciprocating piston engine aircraft and is extremely flammable at normal operating temperatures.

GRADES

There are several different grades of aviation gasoline available around the world, they are 80/87, 100/130 and 100LL.

AvGas grades are defined by their octane ratings with the first number being the lean mixture rating and the second the rich mixture rating e.g. AvGas 100/130 (in this case the lean mixture performance rating is 100 Motor Octane Number (MON) and the rich mixture rating is 130 MON).

In AvGas 100LL, the LL standing for 'low lead', this grade of aviation gasoline was introduced to reduce the amount of lead by one-half (from 4 grams per gallon to 2 grams per gallon) and is acceptable to be used in engines originally designed for grades with higher lead contents.

PRIST IN AVGAS

PRIST® Hi-Flash™ is commonly used in AvGas in extremely cold climates or in aircraft that are flying in freezing temperature for extended periods of time.

 

JET FUELS

Outside former communist areas, there are currently two main grades of turbine fuel in use in civil commercial aviation: Jet A-1 and Jet A, both are kerosene type fuels. There is another grade of jet fuel, Jet B which is a wide cut kerosene (a blend of gasoline and kerosene) but it is rarely used except in very cold climates.

JET A-1

Jet A-1 is a kerosene grade of fuel suitable for most turbine engine aircraft. It is produced to a stringent internationally agreed standard, has a flash point above 38°C (100°F) and a freeze point maximum of -47°C.

JET A

Jet A is a similar kerosene type of fuel, produced to an ASTM specification and normally only available in the U.S.A. It has the same flash point as Jet A-1 but a higher freeze point maximum (-40°C).

MILITARY FUELS

JP-5

JP-5 is higher flash point kerosene (144° F vs. 100° F for other Jet fuels) used predominantly aboard Navy vessels, JP-5 has PRIST® Hi-Flash™ added and meets the requirements of the U.S. Military Specification MIL-PRF-5624S Grade JP-5. JP-5 also meets the requirements of the British Specification DEF STAN 91-86 AVCAT/FSII (formerly DERD 2452) and NATO Code F-44.

JP-8

JP-8 is the militaries “single battlefield” fuel which has the lower freeze point requirements of Jet A-1 (-47°C).

With the addition of PRIST® Hi-Flash™, a corrosion inhibitor/lubricity agent and static dispersant additive; it meets the requirements of the U.S. Military Specification MIL-T-83188. JP-8 also meets the requirements of the British Specification DEF STAN 91-87 AVTUR/FSII (formerly DERD 2453) and NATO Code F-34.