FORD 2013 Explorer v.1 - Manual (Page 328)

ENGINE COOLANT CHECK
Checking the coolant level
WARNING: Do not allow the fluid to touch your skin or eyes. If
this happens, rinse the affected areas immediately with plenty of
water and contact your doctor.
WARNING: Make sure that the level is within the COLD FILL
RANGE.
Note: Coolant expands when it is hot. The level may extend beyond the
COLD FILL RANGE.
Note: For best results, coolant concentration should be tested with a
refractometer such as Rotunda tool 300-ROB75240E available from your
dealer. Ford does not recommend the use of hydrometers or coolant test
strips for measuring coolant concentration.
Note: Automotive fluids are not interchangeable; do not use engine
coolant/antifreeze or windshield washer fluid outside of its specified
function and vehicle location.
The concentration and level of engine coolant should be checked at the
intervals listed in scheduled maintenance information.
If the level is below the COLD FILL RANGE, add coolant immediately.
Adding Engine Coolant
WARNING: 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.
WARNING: 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.
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.
328 Maintenance
2013 Explorer (exp)
Owners Guide gf, 1st Printing
USA (fus)