Shell JP-5 Alternative

[CUBOID88]

Hello,

Can anyone suggest a suitable fluid to use when testing a unit that runs on Shell JP-5 (Mil-T-5624J)? We normally test units on our rig with Aeroshell Calibration Fluid 2. I've contacted Shell themselves to see if there is a similar calibration fluid equivalent to JP-5 but there are less than helpful. For insight, we are looking to test the CFM56-3 Oil/Fuel Heat Exchanger covered by ATA 79-21-24. I know Calibration Fluid 2 is an approved testing fluid but I'm having difficulty substantiating its use in testing this unit. Any suggestions would be appreciated..

 

[dgallup]

Try contacting Rock Valley. We buy calibration fluids from them although not JP-5.

 

[WKTaylor]

Be cautious...

Raw JP fuel is supplied to the military... which then blends in additives before delivery to the end-item [jet, helo, tank, etc]. The additives, such as anti-static, anti-icing, biocides, etc can be very abusive and/or have other non-intended consequences.

Mix ratios for the additives can vary quite a bit also, within the tanks, based on subtle factors such as additive evaporation from the fuel and re-deposition on tank walls above the fuel level. Then, during the next refueling, more fuel+additives is pumped-in that re-absorbs the additives [that had evaporated and clung to the tanks walls]. And the cycle can repeat many times. The classic "apple jelly" accumulation problem can occur with excess DIEGME mixed with excessive moisture in the fuel [evolved thru tank venting to the outside world].

Regards, Wil Taylor

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