RE: K1 Kerosene
Mitchell,
You probably haven't found anything from JetCat about Prist, because there are no issues with using it, and no reason to use it.
Prist is an anti-icing addative. It does no harm, or does no good either for that matter, in our fuel or fuel systems. Go ahead and run the fuel from your local airport and you won't have any problems. I buy mine from the local FBO, and have no problems.
All jet fuel contains a small amount of water. That's just the way it is. Water vapor in the air condenses in the fuel storage, distribution and pumping equipment all along the line.....from the manufacturer to the end user. At low temperatures, the water can freeze, forming small crystals that can block a filter or form into larger deposits at bends in the fuel lines. Prist lowers the temperature at which the water can freeze, because Prist is water soluble....it doesn't dissolve in jet fuel. It hooks up to the water molecules, and reduces the temperature at which they can freeze.
This is important in a man carrying airplane, or RPV like the Global Hawk that operates at altitudes where the temperatures can drop to a slow as -65 degrees F. The fuel tank sumps are always drained of the accumulated water prior to flight.
Since we don't fly our jets at altitudes that would freeze the water in the fuel, why bother with Prist at all?
Some people have the mistaken idea that Prist is an algeacide, but that is not the case.
Make sure that the pickup tube in your fuel can is an inch ot two above the bottom of the can, and you shouldn't have any problems. Pour the residuals out before refilling.
Keep an eye on the inside of your fuel jugs for any signs of algae contamination. It will appear as a stringy black mass of goo near the bottom of the can. Algae lives in the water at the water/fuel separation point.
I purposly left a 5 gallon can of fuel, (no oil) in the garage for over two years, looked at it periodically, and after having found no algae bloom, I mixed the oilk in it and used it.
Harley Condra
BVM REP
JetCat REP