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 TB 55-1900-231-15
2.
metal deactivator-this prevents free copper and other trace heavy metals from reacting in the
autooxidation process and allows the antioxidant to function effectively. Copper will catalyze (i. e. ,
accelerate) the breakdown of any petroleum fuel. Without the metal deactivator, the effectiveness of
the antioxidant would be reduced significantly.
3.
dispersant-this causes any deposits or agglomerates (i. e. , organic sediments) present to be
maintained in a finely dispersed state. It prevents the formation of large particulates and reduces the
tendencies for deposits to occur within critical fuel system components.
4.
corrosion inhibitor-this reduces the corrosion of ferrous or metallic surfaces by forming a protective
barrier over the surface. It is designed to protect fuel-wetted surfaces from corrosion, but will not
function in environments of heavy water contamination (i. e. , water bottoms or sump regions) where
the fuel is prevented from contacting the metal by the water.
5.
biocide-this functions to kill any micro-organisms that could grow at the fuel-water interface in fuel
storage tank environments.
B.
The stabilizer additive is most effective when added to clean, fresh fuel as a preventive measure. Once the
fuel has started to deteriorate, the additive can only slow down the process, but cannot restore deteriorated
fuel to 'hew" condition.
C.
The stabilizer additive is, however, not intended for routine use in all diesel fuels, but should be used only in
situations where fuel or equipment is subject to storage or infrequent use. Typical applications are to pre-
positioned fuel, pre-positioned equipment to be stored fully-fueled, equipment in depot storage, equipment
undergoing depot rebuild/modification.
IV.
HOW TO USE THE STABILIZER ADDITIVE
A.
The stabilizer additive currently qualified under MIL-S-53021 has the designation FSP-55/JF and is packaged
as a two-component system. In this publication FSP-55/JF refer to the two-component system, while FSP-55
and JF refer to the two components which make up the system. The FSP-55 component and the JF
component are both required in equal amounts for maximum effectiveness. FSP-55/JF will always be
shipped in pairs of containers, i. e. , two 55-gallon drums, two 5-gallon cans, etc. This is done because
environmental regulations require the biocide component to remain in its original container until it reaches
the end use. FSP-55/JF is now available through the military supply system. Stock numbers and
nomenclature are listed in Paragraph V of this publication.
B.
Fuel may be treated with stabilizer additive in bulk storage tanks, tank trucks, tank and pump units, or in
individual watercraft.
C.
The amount of additive to use is determined from Table I, based on the treatment rate of one gallon each of
the two FSP-55/JF components per 5,000 gallons of fuel. Note that both components of FSP-55/JF are
required for satisfactory treatment.
Table I.
Treatment Levels for FSP-55/JF Stabilizer Additive System in Diesel Fuel.
Metric Unit Rule : Fuel (in gallons) X 0.757 = Treatment (in ml)
G-2
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