Ford 2007 F-650 Owner's Manual page 183

Maintenance and Specifications
If the engine coolant has not been checked at the recommended interval,
the engine coolant reservoir may become low or empty. If the reservoir is
low or empty, add engine coolant to the reservoir. Refer to Adding
engine coolant in this chapter.
Note: Automotive fluids are not interchangeable; do not use engine
coolant, antifreeze or windshield washer fluid outside of its specified
function and vehicle location.
Adding engine coolant - 6.0L Power Stroke
Note: The engine coolant reservoir requires air space for expansion
volume. The proper fill level is identified on the reservoir; do not overfill
the reservoir.
Note: If the coolant should get extremely low and the engine very hot,
let the engine cool for approximately 15 minutes before adding coolant.
After the engine has cooled, start the engine and add coolant slowly.
Adding coolant to a hot engine may crack the cylinder head or
crankcase. Never use only water to fill the cooling system.
When adding coolant, make sure it is a 50/50 mixture of engine coolant
and distilled water. Add the mixture to the coolant reservoir, when the
engine is cool, until the appropriate fill level is obtained.
Do not add engine coolant when the engine is hot. Steam and
scalding liquids released from a hot cooling system can burn you
badly. Also, you can be burned if you spill coolant on hot engine parts.
Do not put engine coolant in the windshield washer fluid
container. If sprayed on the windshield, engine coolant could
make it difficult to see through the windshield.
The cooling system in your vehicle is filled with yellow-colored
Motorcraft Premium Gold Engine Coolant meeting Ford Specification
WSS-M97B51–A1.
Note: Add the coolant type originally equipped in your vehicle.
• Add Motorcraft Premium Gold Engine Coolant, VC-7–B
(yellow-colored).
Note: Use of Motorcraft Cooling System Stop Leak Pellets, VC-6, may
darken the color of Motorcraft Premium Gold Engine Coolant from
yellow to golden tan.
182
2007 F-650/750 (f67)
Supplement
USA (fus)