Navistar MaxxForce DT, Operation And Maintenance Manual

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SECTION 2 – REQUIREMENTS FOR FUEL, ENGINE OIL, AND COOLANT
ACCEPTABLE FUEL BLENDS
• Ultra low sulfur kerosene (No. 1-D S15 diesel fuel)
blended with No. 2-D S15 fuel to improve cold weather
performance. Blend rate would depend upon regional
low temperatures.
• Lower biodiesel blends up to B5 (a blend of 5% neat
biodiesel with 95% diesel fuel).
Such blends have characteristics indistinguishable from
diesel fuel, if the two components meet the requirements
of their respective standards:
ASTM D6751 current
revision, for neat biodiesel and ASTM D975 current
revision, for ultra low sulfur diesel fuel.
As of October 1, 2008 blends of up to 5% biodiesel are
included in the diesel fuel standard ASTM D975-08a.
(D975-08a designates the 2008 revision of the standard.)
Navistar, Inc. approves of blends up to B5, provided that the
two components satisfy current specifications. Quality biodiesel
blends up to B5 should not cause engine or fuel system
problems.
USE OF HIGHER BIODIESEL FUEL BLENDS (B6 TO B20)
Standard ASTM D7467-08 covers the specifications for blends
between 6% and 20% (B6 to B20). These blends may be used
in vehicles that operate in populated areas or in fleets which are
required to use alternative fuels to reduce urban pollution.
Use of B6 to B20 blends is at the discretion of the
customer/operator and will not automatically void an engine
warranty. However, if engine component failure can be directly
attributable to use of a B6 to B20 blend not provided by
a BQ9000 certified fuel supplier or not meeting the ASTM
D7467-08 Standard, Navistar may, at its option, deny warranty
on the affected engine or engine component.
Navistar recommends users of B20 select a BQ9000 certified
fuel supplier and request proof from the supplier the fuel meets
ASTM D7467-08 Standard. Fuels not meeting the specification
may cause fuel system deposits, plugged filters, contaminated
engine oil, and fuel degradation.
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