ENGINE MAINTENANCE - Warranty and the Use of Biodiesel Fuel meet emission regulations and to prevent damage to the engine and exhaust system. The use of other grades of diesel fuels other than ULSD fuel will be considered a use of incorrect fuel for the engine. PACCAR is not responsible for failures caused by the use of incorrect fuel, oil or DEF or by water, dirt or other containments in the fuel or DEF. The engine oil and oil filter are changed per the modified schedule. See the Engine Preventative Maintenance Schedule. The fuel filter is changed every 25,000 miles/40,000 km. The use of approved biodiesel fuel does not affect the PACCAR engine warranty.
Failures caused by the use of non- approved biodiesel fuels or other fuel additives that are of unacceptable quality or do not meet specified industry standards are not considered as defects of parts or workmanship by PACCAR and therefore will not be covered by the PACCAR engine warranty. PACCAR recommends that customers intending to use biodiesel blends become familiar with the additional handling considerations of these fuels such as ageing, metal compatibility and tendency to absorb water. Please reference the fuel supplier’s technical information or industry guidelines such as the American Trucking Association Truck Maintenance Council document RP 357.
In particular, operators should be aware that biodiesel blends are more prone to cold flow (gelling) and filter plugging issues compared to conventional diesel fuel. If vehicles are expected to be operated in temperatures below freezing, care should be taken to ensure that both the biodiesel fuel used and the appropriate vehicle fuel system accessory heaters are utilized. Operators should also be aware that biodiesel energy content (by volume) is lower than diesel which can reduce fuel economy by up to two percent. 2 Warranty and the Use of Biodiesel Fuel Recommendations to Avoid Fuel Gelling Biodiesel information and warranty precautions. Information to prevent fuel gelling. PACCAR Inc.
approves the use of biodiesel fuel blends from 6 to 20 percent by volume in diesel fuel providing that the following conditions are met: The biodiesel used in the blend meets ASTM Standard D6751 or EN 14214 specifications. The biodiesel used in the blend is sourced from a BQ-9000 Accredited Producer. The finished blend meets the fuel properties of the ASTM Standard D975 (up to B5 blend) or D7467 (B6 to B20 blend). Use appropriate fuel grade/blend for conditions. Specify vehicle with proper cold weather equipment (12v electric pre-heater, fuel blending valve, fuel coolant heater, 12v line heaters and tank heaters).
PACCAR does not recommend the use of fuel additives, however, should a customer decide there is a need for temporary use of a winter fuel additive, PACCAR offers the following guidance: Use an industry known, high quality product (EPA approved). 48 Y53-1166-1G1 (08/2018)