Use good quality diesel
fuel from a reputable supplier in your vehicle. The manufacturer requires
that you must fuel this vehicle with Ultra Low Sulfur Highway Diesel
fuel (15 ppm Sulfur maximum) and prohibits the use of Low Sulfur Highway
Diesel fuel (500 ppm Sulfur maximum) to avoid damage to the emissions
control system. For most year-round service, No. 2 diesel fuel meeting
ASTM specification D-975 Grade S15 will provide good performance.
If the vehicle is exposed to extreme cold (below 20F or -7C), or is
required to operate at colder-than-normal conditions for prolonged
periods, use climatized No. 2 diesel fuel or dilute the No. 2 diesel
fuel with 50% No. 1 diesel fuel. This will provide better protection
from fuel gelling or wax-plugging of the fuel filters. This vehicle
is fully compatible with biodiesel blends up to 5% biodiesel meeting
ASTM specification D-975.