Ford 2012 Expedition v.1 Manuel d'utilisateur télécharger pdf (Page 336)

• NEVER increase the coolant concentration above 60%.

•

A coolant concentration of 60% will provide improved freeze

point protection. Increased engine coolant concentrations above

60% will decrease the overheat protection characteristics of the

engine coolant and may cause engine damage.

• If available, refer to the chart on the coolant container to

ensure the coolant concentration in your vehicle will provide

adequate freeze protection at the temperatures in which you

drive in the winter months.

If you drive in extremely hot climates:

• It is still necessary to maintain the coolant concentration

above 40%.

• NEVER decrease the coolant concentration below 40%.

• Decreased engine coolant concentrations below 40% will

decrease the corrosion/freeze protection characteristics of the

engine coolant and may cause engine damage.

• If available, refer to the chart on the coolant container to

ensure the coolant concentration in your vehicle will provide

adequate protection at the temperatures in which you drive.

Vehicles driven year-round in non-extreme climates should use a 50/50

mixture of engine coolant and distilled water for optimum cooling system

and engine protection.

What you should know about fail-safe cooling

If the engine coolant supply is depleted, this feature allows the vehicle to

be driven temporarily before incremental component damage is incurred.

The “fail-safe” distance depends on ambient temperatures, vehicle load

and terrain.

How fail-safe cooling works

If the engine begins to overheat:

•

The engine coolant temperature gauge will move to the red (hot) area.

• The engine coolant temperature symbol will illuminate.

• The

indicator light will illuminate.

If the engine reaches a preset over-temperature condition, the engine

will automatically switch to alternating cylinder operation. Each disabled

cylinder acts as an air pump and cools the engine.

Maintenance and Specifications

336

2012 Expedition (exd)

Owners Guide, 1st Printing

USA (fus)

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Ford 2012 Expedition v.1 Manuel d'utilisateur Page 336

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