Ford Mustang (2018 year). Manual — part 56

UNDER HOOD OVERVIEW - 2.3L ECOBOOST™

E174450

Battery (out of view). See Changing the 12V Battery (page 236).

A

Engine oil dipstick. See Engine Oil Dipstick (page 229).

B

Engine oil filler cap. See Engine Oil Check (page 229).

C

Brake fluid reservoir. See Brake Fluid Check (page 234).

D

Air filter assembly. See Changing the Engine Air Filter (page 242).

E

Engine coolant reservoir. See Engine Coolant Check (page 230).

F

Windshield washer fluid reservoir. See Washer Fluid Check (page 235).

G

Power distribution box. See Fuses (page 215).

H

UNDER HOOD OVERVIEW - 5.0L

E250052

Battery. See Changing the 12V Battery (page 236).

A.

Engine oil filler cap. See Engine Coolant Check (page 230).

B.

Engine oil dipstick. See Engine Oil Dipstick (page 229).

C.

Brake fluid reservoir. See Brake Fluid Check (page 234).

D.

Air filter. See Changing the Engine Air Filter (page 242).

E.

Engine coolant reservoir. See Engine Coolant Check (page 230).

F.

Washer system fluid reservoir. See Washer Fluid Check (page 235).

G.

Engine compartment fuse box. See Fuses (page 215).

H.

ENGINE OIL DIPSTICK

E161560

A

B

MIN

A

MAX

B

ENGINE OIL CHECK

To check the engine oil level consistently
and accurately, do the following:

1.

Make sure the parking brake is on. Make
sure the transmission is in park (P) or
neutral (N).

2. Run the engine until it reaches normal

operating temperature.

3. Make sure that your vehicle is on level

ground.

4. Switch the engine off and wait 15

minutes for the oil to drain into the oil
pan. Checking the engine oil level too
soon after you switch the engine off
may result in an inaccurate reading.

5. Open the hood. See Opening and

Closing the Hood (page 225).

6. Remove the dipstick and wipe it with

a clean, lint-free cloth. See Under
Hood Overview (page 227).

7.

Replace the dipstick and remove it
again to check the oil level. See
Engine Oil Dipstick (page 229).

8. Make sure that the oil level is between

the maximum and minimum marks. If
the oil level is at the minimum mark,
add oil immediately. See Capacities
and Specifications (page 291).

9. If the oil level is correct, replace the

dipstick and make sure it is fully seated.

Note: Do not remove the dipstick when the
engine is running.

Note: If the oil level is between the
maximum and minimum marks, the oil level
is acceptable. Do not add oil.

Note: The oil consumption of new engines
reaches its normal level after approximately
3,000 mi (5,000 km).

Adding Engine Oil

WARNING

Do not remove the filler cap when
the engine is running.

Do not use supplemental engine oil
additives because they are unnecessary
and could lead to engine damage that may
not be covered by the vehicle Warranty.

E142732

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 Committee (ILSAC).

To top up the engine oil level do the
following:

1.

Clean the area surrounding the engine
oil filler cap before you remove it.

2. Remove the engine oil filler cap. See

Under Hood Overview (page 227).
Turn it counterclockwise and remove
it.

3. Add engine oil that meets Ford

specifications. See Capacities and
Specifications (page 291). You may
have to use a funnel to pour the engine
oil into the opening.

4. Recheck the oil level.
5. If the oil level is correct, replace the

dipstick and make sure it is fully seated.

6. Replace the engine oil filler cap. Turn

it clockwise until you feel a strong
resistance.

Note: Do not add oil further than the
maximum mark. Oil levels above the
maximum mark may cause engine damage.

Note: Make sure you install the oil filler cap
correctly.

Note: Soak up any spillage with an
absorbent cloth immediately.

ENGINE COOLANT CHECK

WARNINGS

Never remove the coolant reservoir
cap when the engine is running or
hot.

WARNINGS

Do not put coolant in the windshield
washer reservoir. If sprayed on the
windshield, coolant could make it

difficult to see through the windshield.

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 you loosen the cap
slightly.

Do not add coolant further than the
MAX mark.

When the engine is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance (page 433).

Note: Make sure that the coolant level is
between the MIN and MAX marks on the
coolant reservoir.

Note: Coolant expands when it is hot. The
level may extend beyond the MAX mark.

Maintain coolant concentration within
48% to 50%, which equates to a freeze
point between -29°F (-34°C) and -35°F
(-37°C). Coolant concentration should be
checked using a refractometer. We do not
recommend the use of hydrometers or
coolant test strips for measuring coolant
concentration.

Adding Coolant

WARNINGS

Do not add engine coolant when the
engine is hot. Failure to follow this
instruction could result in personal

injury.

Never remove the coolant reservoir
cap when the engine is running or
hot.