Fuel Type; Blending; Biodiesel Fuels - PREVOST H3-41 Maintenance Manual

SECTION 03 : FUEL SYSTEM
On-highway diesel engines
emission regulations are designed to operate
ONLY with ULSD fuel. ULSD fuel will enable the
use of cleaner technology diesel engines and
vehicles with advanced
devices, resulting in significantly improved air
quality.

6.1 FUEL TYPE

EPA-10 and later engines like the Volvo D13 are
designed to run on Ultra Low Sulfur Diesel
(ULSD) fuel, which can contain no more than 15
ppm sulfur.
Fuel used must meet engine manufacturer's
specification. Refer
specifications.
CAUTION
ULSD fuel is necessary to avoid fouling the
engine's Exhaust Aftertreatment
Improper fuel use will reduce the efficiency of
the engine's Aftertreatment System and may
permanently damage the system.
CAUTION
Owners of 2010 and later model year on-
highway diesel engine must refuel only with
ULSD fuel.
NOTE
Burning Low Sulfur Diesel fuel (instead of
ULSD fuel) in 2010 and later model year diesel
engines is illegal and punishable with civil
penalties.
NOTE
Engine and vehicle manufacturers expect
ULSD fuel to be fully compatible with the
existing fleet, including 2006 and earlier model
year vehicles. In
introduction of ULSD fuel to older vehicles may
affect fuel system components or loosen
deposits in fuel tanks. As part of a good
maintenance program, owners and operators
of existing cars, trucks and buses are
encouraged to monitor their diesel-powered
vehicles closely for potential fuel system leaks
18
PA1621 Maintenance Manual All Series | Revised May 2018
meeting 2010
emissions control
to Volvo engine
System.
some instances, the
or premature fuel filter plugging during the
change-over to ULSD fuel.
NOTE
Like Low Sulfur Diesel fuel, ULSD fuel requires
good lubricity and corrosion inhibitors to
prevent unacceptable
necessary, additives to increase lubricity and
to inhibit corrosion will be added to ULSD fuel
prior to its retail sale.

6.2 BLENDING

Only ultra low sulfur kerosene – No.1 diesel with
no more than 15ppm sulfur may be blended with
ULSD fuel to improve cold weather performance.
With so many kerosene formulations on the
market, care must be taken to select kerosene
with a maximum of 15ppm sulfur.
Blend rates remain the same as with Low Sulfur
Diesel fuel.

6.3 BIODIESEL FUELS

Biodiesel up to a maximum of 5% blend (B5)
may be used and
manufacturers' mechanical
engine and emissions
components, provided the biofuel used in the
blend conforms to ASTM D6751, B1 to B5
blends conform to ASTM D975. Also, any engine
performance problem related to the use of
biodiesel fuel would not be recognized nor
considered as Volvo or Prevost's responsibility.
However, Volvo engines are certified to comply
with U.S. EPA and
standards based upon the use of test fuels with
specifications established by these regulatory
agencies.
Alternative fuels, including biodiesel, that are not
substantially similar to the required test fuels
may adversely affect
compliance. As a result, Volvo does not warrant
the engine will conform to applicable Federal or
California emissions limits when operated on
biodiesel or other alternative fuels that are not
substantially similar to specified test fuels used
for certification.
Additional maintenance care must be carried-out
for the following systems:
engine wear. As
will not affect the
warranty as to
system related
California emissions
engine emissions