Ford 2011 F-150 v.1 Manuel d'utilisateur télécharger pdf (Page 383)

For vehicles with overflow coolant systems with a non-pressurized cap

on the coolant recovery system, add coolant to the coolant recovery

reservoir when the engine is cool. Add the proper mixture of coolant and

distilled water to the FULL COLD level. For all other vehicles which have

a coolant degas system with a pressurized cap, or if it is necessary to

remove the coolant pressure relief cap on the radiator of a vehicle with

an overflow system, follow these steps to add engine coolant.

WARNING: To reduce the risk of personal injury, make sure the

engine is cool before unscrewing the coolant pressure relief cap.

The cooling system is under pressure; steam and hot liquid can come

out forcefully when the cap is loosened slightly.

Add the proper mixture of coolant and water to the cooling system by

following these steps:

1. Before you begin, turn the engine off and let it cool.

2. When the engine is cool, wrap a thick cloth around the coolant

pressure relief cap on the coolant reservoir (a translucent plastic bottle).

Slowly turn cap counterclockwise (left) until pressure begins to release.

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, to

within the COLD FILL RANGE or the FULL COLD level on the reservoir.

If you removed the radiator cap in an overflow system, fill the radiator

until the coolant is visible and radiator is almost full.

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/–37°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.

Maintenance and Specifications

383

2011 F-150 (f12)

Owners Guide, 1st Printing

USA (fus)

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Ford 2011 F-150 v.1 Manuel d'utilisateur Page 383