FORD 2013 Mustang v.1 - Manual (Page 232)

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 Lubricants
Specification Advisory Council (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.
232 Maintenance
2013 05+ Mustang (197)
Owners Guide gf, 1st Printing
USA (fus)