Lincoln 2013 MKZ Owner's Manual page 278

Checking the fluid level
Low fluid level
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If the fluid level is below the MIN range
of the dipstick, add fluid to reach the
hash mark level.
Note: If the fluid level is below the MIN
level, do not drive the vehicle. An
underfill condition may cause shift or
engagement concerns or possible
damage.
Correct fluid level
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The transmission fluid should be
checked at normal operating
temperature 180°F-200°F
(82°C-93°C) on a level surface. The
normal operating temperature can be
reached after approximately 20 miles
(30 kilometers) of driving.
The transmission fluid level should be
targeted within the cross-hatch area
if at normal operating temperature
180°F-200°F (82°C-93°C).
Maintenance
High fluid level
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If the fluid level is above the MAX
range of the dipstick, remove fluid to
reach the hashmark level.
Note: Fluid level above the MAX level
may cause shift or engagement
concerns or possible damage. High
fluid levels can be caused by an
overheating condition. If your vehicle
has been operated for an extended
period at high speeds, in city traffic
during hot weather or pulling a trailer,
the vehicle should be turned off until
normal operating temperatures are
reached. Depending on vehicle use,
cooling times could take up to 30
minutes or longer.
Adjusting Automatic Transmission
Fluid Levels
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