2019 FORD F650/750 Owners Manual

Page 97 of 387

FORD F650/750 2019  Owners Manual Note:
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

Page 98 of 387

FORD F650/750 2019  Owners Manual Biodiesel fuel is a chemically converted
product from renewable fuel sources, such
as vegetable oils, animal fats and waste
cooking greases.
To help achieve acceptable engine
performance and durabilit

Page 99 of 387

FORD F650/750 2019  Owners Manual Do not use alcohol-based additives to
improve cetane quality, to prevent fuel
gelling or any other use. The use of alcohol
additives may result in damage to the fuel
injectors and system.  See Capacit

Page 100 of 387

FORD F650/750 2019  Owners Manual RUNNING OUT OF FUEL -
DIESEL
Avoid running out of fuel. This allows air to
enter the fuel system and may make it
difficult to restart your vehicle.
If your vehicle runs out of fuel:
•
Normally addin

Page 101 of 387

FORD F650/750 2019  Owners Manual Fuel Filler Cap
WARNING: The fuel system may
be under pressure. If you hear a hissing
sound near the fuel filler inlet, do not
refuel until the sound stops. Otherwise,
fuel may spray out, which could

Page 102 of 387

FORD F650/750 2019  Owners Manual WARNING: Stay outside your
vehicle and do not leave the fuel pump
unattended when refueling your vehicle. WARNING: 
Keep children away
from the fuel pump; never let children
pump fuel. WARNING: 
Wait

Page 103 of 387

FORD F650/750 2019  Owners Manual If the fuel cap warning lamp remains on,
at the next opportunity, safely pull off of
the road, remove the fuel filler cap, align
the cap properly and reinstall it. The check
fuel cap warning lamp or w

Page 104 of 387

FORD F650/750 2019  Owners Manual Conditions That Affect Fuel Economy
•
Heavily loading your vehicle or towing
a trailer may reduce fuel economy at
any speed.
• Carrying unnecessary weight in your
vehicle may reduce fuel economy.