Kohler KDI 3404TCR Owner's Manual page 15

systems. Too low a lubricating capacity is particularly a problem in fuels with a low sulfur content (and in this
respect sulfur contents ‹500 mg/kg can already be considered low). An adequate lubricating capacity is
guaranteed by the appropriate additives in low-sulfur (‹50 mg/kg) or sulfur-free (‹10 mg/kg or ‹15 mg/kg)
diesel fuels according to EN 590 and ASTM D 975. In low-sulpur and sulfur-free diesel fuels which do not
comply with this standard, the lubricating capacity may have to be guaranteed by additives. The parameter
for sufficient lubricating capacity is a maximum wear spot of 460 micrometers in the HFRR test (EN ISO
12156-1).
KDI Electronic Injection Tier 3 – Stage IIIA emission equivalent certified Engines (EGR engines)
• Those engines are designed for fuels in accordance with EN 590 and ASTM D975 for a cetane number of at
least 45. Since those engines are not equipped with exhaust gas after-treatment, they can be operated with
diesel fuels with sulfur content up to 500 mg/kg (ppm). Compliance with the emission requirements is
guaranteed only with sulfur content up to 350 mg/kg (ppm).
Fuels with a sulfur content > 50 mg/kg demand a shorter lubricating oil change interval. This is set at 250hrs.
However, the engine oil must be changed when the Total Base Number TBN is reduced to 6.0 mgKOH/g test
method ASTM D4739. Do not use low SAPS engine oils.
2.5.1 Fuel for low temperatures
•
When operating the engine in ambient temperatures lower than 0 degrees C, use suitable low temperature
fuel normally available from fuel distributors and corresponding to the specifications of Tab. 2.3 .
•
These fuels reduce the formation of paraffin in diesel at low temperatures.
•
When paraffin forms in the diesel, the fuel filter becomes blocked interrupting the flow of fuel.
2.5.2 Biodiesel fuel
•
Fuels containing 10% methyl ester or B10, are suitable for use in this engine provided that they meet the
specifications listed in the Tab. 2.3.
• DO NOT USE vegetable oil as a biofuel for this engine.
Biodiesel according to EN 14214 (only permissible for mixture with diesel fuel at max. 10% (V/V))
US biodiesel according to ASTM D6751 – 09a (B100) (only permissible for mixtures with diesel fuel at 10% (V/V))
2.5.3 Synthetic fuels: GTL, CTL, BTL, HV
It is a well-known fact that engines which are operated for longer periods with conventional diesel fuel and then
converted to synthetic fuels suffer shrinkage of polymer seals in the injection system and thus fuel leaks. The reason
for this behavior is that the aromatic-free synthetic fuels can lead to a change in the sealing behavior of polymer
seals.
Therefore, conversion from diesel fuel to synthetic fuel may only be done after changing the critical seals. The
problem of shrinkage does not occur when an engine was operated with synthetic fuel from the start.
2.5.4 Non-Road Fuels
Only for KDI Electronic Injection Tier 3 – Stage IIIA emission equivalent certified Engines (EGR engines).
Other non-road fuels may be used if they comply with all the limit values of EN 590 except for the fuel density, the
cetane number and the sulfur content.
The following limits apply for these parameters:
TECHNICAL INFORMATION
BIODIESEL COMPATIBILITY
2
2.4
2.5
15
EN