TM 5-3805-281-24-2
Fuels, Lubricants, and Coolant
LUBRICITY OF DIESEL FUELS
Diesel fuel must have adequate lubricity to ensure proper
operation and durability of fuel injection system
components.
Diesel fuels for highway use in the United States, Canada,
and the European Union now require sulfur content less
than 0.05%.
Experience shows that some low sulfur diesel fuels may
have inadequate lubricity and their use may reduce
performance in fuel injection systems due to inadequate
lubrication of injection pump components. The lower
concentration of aromatic compounds in these fuels also
adversely affects injection pump seals and may result in
leaks.
Use of low lubricity diesel fuels may also cause
accelerated wear, injection nozzle erosion or corrosion,
engine speed instability, hard starting, low power, and
engine smoke.
Fuel lubricity should pass a minimum of 3100 gram load
level as measured by the SL BOCLE scuffing test.
A-A-52557, ASTM D975 and EN 590 specifications do not
require fuels to pass a fuel lubricity test.
If fuel of low or unknown lubricity is used, add John Deere
Premium Diesel Fuel Conditioner or Inhibitor,
Corrosion/Lubricity Improver, Fuel Soluble
(MIL-PRF-25017) at the recommended concentration.
John Deere Premium Diesel Fuel Conditioner is available
in winter and summer formulas. Consult your John Deere
engine distributor or servicing dealer for more information.
DPSG,OUOE003,7692
1928OCT991/1
