Recycled Engine Coolant; Coolant Refill Capacity - Ford 2008 F-250 Owner's Manual

Maintenance and Specifications
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.
5. Fill the coolant reservoir slowly with the proper coolant mixture (see
above), to within the "COLD FILL RANGE" on the reservoir.
6. Replace the cap. Turn until tightly installed. (Cap must be tightly
installed to prevent coolant loss.)
After any coolant has been added, check the coolant concentration (refer
to Checking engine coolant). If the concentration is not 50/50
(protection to –34°F/–36°C), drain some coolant and adjust the
concentration. It may take several drains and additions to obtain a 50/50
coolant concentration.
Whenever coolant has been added, the coolant level in the coolant
reservoir should be checked the next few times you drive the vehicle. If
necessary, add enough 50/50 concentration of engine coolant and
distilled water to bring the liquid level to the proper level.
If you have to add more than 1.0 quart (1.0 liter) of engine coolant per
month, have your authorized dealer check the engine cooling system.
Your cooling system may have a leak. Operating an engine with a low
level of coolant can result in engine overheating and possible engine
damage.

Recycled engine coolant

Ford Motor Company does NOT recommend the use of recycled engine
coolant in vehicles originally equipped with Motorcraft Premium Gold
Engine Coolant since a Ford-approved recycling process is not yet
available.
Used engine coolant should be disposed of in an appropriate
manner. Follow your community's regulations and standards for recycling
and disposing of automotive fluids.

Coolant refill capacity

To find out how much fluid your vehicle's cooling system can hold, refer
to Maintenance Product Specifications and Capacities in this section.
If your vehicle is equipped with a diesel engine, refer to the
Maintenance Product Specifications and Capacities section of your
6.0/6.4 Liter Power Stroke Direct Injection Turbo Diesel Owner's
Guide Supplement.
Fill your engine coolant reservoir as outlined in Adding engine coolant
in this section.
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2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)