Fuel Quality; Diesel Fuel Conditioner; Fueling Tips - Ford Diesel 2011 Supplement Manual

Maintenance and Specifications

Fuel quality

It should not be necessary to add any aftermarket additives to your fuel
tank if you use a properly formulated diesel fuel that meets either the
ASTM D975 diesel or the ASTM D7467 B6-B20 biodiesel industry
specifications. Outside of North America, use fuels meeting EN590 or
equivalent local market standard. Aftermarket additives can damage the
injector system or engine. Repairs to correct the effects of using an
aftermarket product in your fuel may not be covered by your warranty.
Many of the world's automakers approved the World-wide Fuel Charter
that recommends diesel fuel specifications to provide improved
performance and emission control system protection for your vehicle.
Diesel fuel that meets the World-wide Fuel Charter should be used when
available. Ask your fuel supplier about fuel that meets the World-wide
Fuel Charter.
Do not blend used engine oil with diesel fuel under any
circumstances. Blending used oil with the fuel will significantly increase
your vehicle's exhaust emissions and reduce engine life due to increased
internal wear.

Diesel fuel conditioner

Additives that will improve fuel cetane numbers may be used to
verify/enhance fuel quality. Use Motorcraft or an equivalent cetane
booster & performance improver as listed in the Maintenance product
specifications and capacities section in this chapter. The customer
warranty may be void from using additives that do not meet or exceed
Ford specifications.
Do not use alcohol based additives to correct fuel gelling. This may
result in damage to the fuel injectors/system. Use Motorcraft or an
equivalent anti-gel & performance improver as listed in the Maintenance
product specifications and capacities section in this chapter. The
customer warranty may be void from using additives that do not meet or
exceed Ford specifications.
Note: These ultra-low sulfur formulations are designed to meet the
emissions standards for the 6.7L engine and is backward compatible as
well (i.e., can be used in Ford 7.3L, 6.9L, 6.4L and 6.0L diesel engines in
Ford vehicles).

Fueling tips

Truck stops have pumps and nozzles designed for larger, heavy-duty
trucks. When refueling at truck stops: if the nozzle shuts off repeatedly
when refueling, wait 5–10 seconds; then use a slower rate of flow (don't
depress the nozzle trigger as far).
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2011 Diesel (eco)
Supplement, 5th Printing
USA (fus)