Page 3 of 318
Customer Assistance 256
Reporting safety defects (U.S. only) 262
Reporting safety defects (Canada only) 262
Cleaning 263
Maintenance and Specifications 270
Engine compartment 272
Engine oil 274
Battery 278
Engine coolant 280
Fuel information 286
Air filter(s) 300
Part numbers 301
Maintenance product specifications and capacities 302
Engine data 305
Accessories 308
Ford Extended Service Plan 310
Index 313
All rights reserved. Reproduction by any means, electronic or mechanical
including photocopying, recording or by any information storage and retrieval
system or translation in whole or part is not permitted without written
authorization from Ford Motor Company. Ford may change the contents without
notice and without incurring obligation.
Copyright © 2008 Ford Motor Company
Table of Contents
3
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 11 of 318
Vehicle Symbol Glossary
Power Windows
Front/Rear
Power Window Lockout
Child Safety Door
Lock/UnlockInterior Luggage
Compartment Release
Panic AlarmEngine Oil
Engine CoolantEngine Coolant
Temperature
Do Not Open When HotBattery
Avoid Smoking, Flames,
or SparksBattery Acid
Explosive GasFan Warning
Power Steering FluidMaintain Correct Fluid
LevelMAX
MIN
Service Engine SoonEngine Air Filter
Passenger Compartment
Air FilterJack
Check Fuel CapLow Tire Pressure
Warning
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Introduction
11
Page 277 of 318

Engine oil and filter recommendations
Look for this certification
trademark.
Use SAE 5W-20 engine oil
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.
To protect your engine and engine’s warranty, use Motorcraft SAE 5W-20
or an equivalent SAE 5W-20 oil meeting Ford specification
WSS-M2C930-A.SAE 5W-20 oil provides optimum fuel economy and
durability performance meeting all requirements for your
vehicle’s engine.Refer toMaintenance product specifications and
capacitieslater in this section for more information.
Do not use supplemental engine oil additives, cleaners or other engine
treatments. They are unnecessary and could lead to engine damage that
is not covered by Ford warranty.
Change your engine oil and filter according to the appropriate schedule
listed in thescheduled maintenance information.
Ford production and Motorcraft replacement oil filters are designed for
added engine protection and long life. If a replacement oil filter is used
that does not meet Ford material and design specifications, start-up
engine noises or knock may be experienced.
It is recommended you use the appropriate Motorcraft oil filter or
another with equivalent performance for your engine application.
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Maintenance and Specifications
277
Page 285 of 318

•Thesymbol 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.
When this occurs the vehicle will still operate. However:
•The engine power will be limited.
•The air conditioning system will be disabled.
Continued operation will increase the engine temperature and the engine
will completely shut down, causing steering and braking effort to
increase.
Once the engine temperature cools, the engine can be re-started. Take
your vehicle to an authorized dealer as soon as possible to minimize
engine damage.
When fail-safe mode is activated
You have limited engine power when in the fail-safe mode, so drive the
vehicle with caution. The vehicle will not be able to maintain high-speed
operation and the engine will run rough. Remember that the engine is
capable of completely shutting down automatically to prevent engine
damage, therefore:
1. Pull off the road as soon as safely possible and turn off the engine.
2. Arrange for the vehicle to be taken to an authorized dealer.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level and replenish if low.
WARNING:Never remove the coolant reservoir cap while the
engine is running or hot.
5. Re-start the engine and take your vehicle to an authorized dealer.
Driving the vehicle without repairing the engine problem
increases the chance of engine damage. Take your vehicle to an
authorized dealer as soon as possible.
FUEL FILTER
Your vehicle is equipped with a lifetime fuel filter that is integrated with
the fuel tank. Regular maintenance or replacement is not needed.
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Maintenance and Specifications
285
Page 315 of 318

fail-safe cooling .......................284
idle speed control ...................278
lubrication specifications .......302
refill capacities ........................302
service points ..........................272
starting after a collision .........233
Engine block heater .................201
Engine oil ..................................274
change oil soon warning,
message center .......................274
checking and adding ..............274
dipstick ....................................274
filter, specifications ........277, 301
recommendations ...................277
refill capacities ........................302
specifications ..........................302
Event data recording ....................7
Exhaust fumes ..........................201
F
Fail safe cooling ........................284
Floor mats ...................................87
Fluid capacities .........................302
Fog lamps ....................................54
Four-Wheel Drive vehicles
driving off road .......................226
Fuel ............................................286
calculating fuel
economy ............................20, 291
cap ...........................................288
capacity ...................................302
choosing the right fuel ...........289
comparisons with EPA fuel
economy estimates .................294
detergent in fuel .....................290
filler funnel .............................290
filling your vehicle with
fuel ...........................286, 288, 291filter, specifications ........285, 301
fuel pump shut-off switch .....233
improving fuel economy ........291
octane rating ...................289, 305
quality ......................................289
running out of fuel .........248, 290
safety information relating to
automotive fuels .....................286
Fuel pump shut-off switch .......233
Fuses ..................................234–235
G
Gas cap (see Fuel cap) ............288
Gas mileage (see Fuel
economy) ...................................291
Gauges .........................................17
H
Hazard flashers .........................233
Headlamps ...................................53
aiming ........................................56
autolamp system .......................53
bulb specifications ....................59
daytime running lights .............54
flash to pass ..............................55
high beam .................................55
replacing bulbs .........................61
turning on and off ....................53
Heating
heating and air conditioning
system .................................45, 48
Homelink wireless control
system ..........................................83
Hood ..........................................271
I
Ignition ...............................198, 305
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Index
315