FORD 2013 Flex v.1 - Manual (Page 308)

Only use oils certified for gasoline engines by the
American Petroleum Institute (API). An oil with this
trademark symbol conforms to the current engine and
emission system protection standards and fuel
economy requirements of the International Lubricant
Standardization and Approval Committee (ILSAC),
comprised of U.S. and Japanese automobile
manufacturers.
1. Remove the filler cap.
2. Add engine oil that meets Ford specifications. See Capacities and
Specifications for more information.
3. Replace the filler cap. Turn it until you feel a strong resistance.
ENGINE COOLANT CHECK
Checking the coolant level
The concentration and level of engine coolant should be checked at the
intervals listed in scheduled maintenance information.
Note: Make sure that the level is at the FULL COLD level or within the
COLD FILL RANGE in the coolant reservoir.
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 concentrations.
Note: Coolant expands when it is hot. The level may extend beyond the
COLD FILL RANGE.
If the level is below the COLD FILL RANGE, add coolant immediately.
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
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.
308 Maintenance
2013 Flex (471)
Owners Guide gf, 1st Printing
USA (fus)