Volvo VNL 780 Operator's Manual page 431

MAINTENANCE AND LUBRICATION
CAUTION
Diesel-powered engines for heavy-duty
trucks built on or after January 1,
2007 are designed to operate only
with Ultra Low Sulfur Diesel (ULSD)
fuel. Improper fuel use will reduce the
efficiency and durability of engines,
permanently damage advanced emissions
control systems, reduce fuel economy
and possibly prevent the vehicles from
running at all. Manufacturer warranties
will be voided by improper fuel use.
Additionally, burning Low Sulfur Diesel
fuel (instead of ULSD fuel) in 2007 and
later model year diesel-powered cars,
trucks and buses is illegal and punishable
with civil penalties.
CAUTION
Ultra Low Sulfur Diesel (ULSD) fuel
with a maximum sulfur content of 15
ppm must be used in order to meet Euro4
engine emission requirements. Using
otherwise approved diesel fuels with a
maximum sulfur content greater than 500
ppm may shorten engine life and void the
engine warranty.
Air is always present inside the fuel tanks, entering mainly through the tank ventilation.
With the air being heated and cooled, condensation is formed and water is mixed in the fuel.
To avoid condensation when the vehicle is parked for longer periods, fill the tanks up to
95% of capacity. Do not fill more than that, as the fuel needs to have room for expansion
during the heat of the day.
For additional information about fuel, refer to the Operator's Manual Vehicle Maintenance.
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