Volvo Penta TWD1643GE Series Operator's Manual page 96

Technical Data
Paraffinic fuels - HVO and GTL
Paraffinic diesel fuels ("Synthetic Diesel") have higher cetane numbers and lower densities than diesel fuels. HVO
(Hydrotreated Vegetable Oils) is renewable paraffinic fuels. GTL (Gas-To-Liquid) is fossil paraffinic fuels.
Volvo Penta approves the use of paraffinic diesel fuels that complies with standard EN 15940. The fuel guarantees
compliance with emission legislation and fulfills the expected lifetime as long as the service requirements are
followed.
Volvo Penta also approves the use of fuel blends between these paraffinic fuels and diesel fuels that comply with
the quality requirements.
Service requirements
• When shifting from diesel fuel to paraffinic fuel, the fuel hoses and sealings must be replaced.
Biodiesel fuels
Alternative fuels, including biodiesel, that are not substantially similar to the required test fuels may adversely
affect engine emissions compliance. As a result, Volvo Penta does not warrant the engine will conform to
applicable emissions limits when operated on, or having been operated on, biodiesel or other alternative fuels
that are not substantially similar to specified test fuels used for certification.
The use of biodiesel up to maximum 10% (B10) in and of itself, will not affect the manufacturers mechanical
warranty, provided the biodiesel used in blend conforms to EN590, EN16734, ASTM D975 and ASTM D7467.
Other relevant local fuel standards that fulfill the above mentioned standards may also be used. A minor drop in
engine power will occur when using biodiesel.
NOTICE! Biodiesel manufactured by FAME (Fatty Acid Methyl Esther) process is hygroscopic and therefore
increase the risk of bacterial growth in the fuel. This may lead to blocked fuel filters. Engine not consuming a full
fuel tank within 4 weeks must not use biodiesel.
Higher levels of biodiesel, up to B30, may be used with restrictions. Fuel according to EN 16709 or ASTM D7467,
or relevant local fuel standards that fulfill mentioned biodiesel fuel standards, must be used. Volvo Penta does
not warrant the engine will conform to applicable emissions limits when operated on biodiesel or another
alternative fuels, that are not substantially similar to specified test fuels used for certification.
Service restrictions for diesel fuel with FAME content between 11% and 30% (B11 to B30)
• Lube oil quality VDS-4 or VDS-4.5 shall be used.
• Oil dilution may occur. Make sure that oil level is not exceeding maximum level, in that case change the oil.
• Lube oil change intervals shall be halved, or utilize oil sampling analysis.
• The engines should be fitted with fuel filters with water separators.
• A fuel heater is required, when high FAME diesel fuels are used below freezing point.
• Biodiesel is aggressive to some materials used in fuel system components. Inspect seals, hoses, rubber
and plastic components daily. Replace any component that is damaged, softened or leaking. Clean biodiesel
from painted surfaces immediately to prevent paint damage.
• Do not use these fuels for engines with long downtime periods.
• If the engine has not been used for a period of 4 weeks or more, the tank and the fuel system shall be flushed
clean by running the engine on at least one full tank of diesel fuel.
• When shifting from diesel fuel to high FAME diesel fuel.
– The fuel hoses and sealings shall be replaced.
– The fuel tank shall be cleaned and the fuel filter shall be replaced after 50 h.
94 47711296 01-2019 © AB VOLVO PENTA