Infiniti Q45. Manual - part 719

ENGINE MAINTENANCE

MA-13

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DRAINING ENGINE COOLANT

1.

Remove grommet from engine undercover.

2.

Open radiator drain plug at the bottom of radiator, and remove radiator cap. 

When draining all of engine coolant in the system, open water drain plugs on engine cylinder block.
Refer to 

EM-84, "DISASSEMBLY"

 .

3.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to 

MA-14, "FLUSHING COOLING SYSTEM"

 .

4.

Remove reservoir tank as necessary, drain engine coolant and clean reservoir tank before installing.

REFILLING ENGINE COOLANT

1.

Install reservoir tank if removed, and radiator drain plug.

CAUTION:

Be sure to clean drain plug and install with new O-ring.

If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-88,

"ASSEMBLY"

 .

2.

Remove air relief plug on heater hose.

3.

Fill radiator and reservoir tank to specified level.

●

Use Genuine Nissan Long Life Antifreeze/Coolant or equivalent mixed with water (distilled or
demineralized). Refer to 

MA-10, "RECOMMENDED FLUIDS AND LUBRICANTS"

 .

●

Pour engine coolant through engine coolant filler neck
slowly of less than 2  (2-1/8 US qt, 1-3/4 Imp qt) a minute
to allow air in system to escape.

PBIC2775E

Radiator drain plug:

 : 1.17 N·m (0.12 kg-m, 10 in-lb)

PBIC0954E

Engine coolant capacity
 (With reservoir tank at “MAX” level):

  Approx. 10.3  (10-7/8 US qt, 9-1/8 Imp qt)

SMA182B

MA-14

ENGINE MAINTENANCE

●

When engine coolant overflows air relief hole on heater hose,
install air relief plug.

4.

Install radiator cap.

5.

Warm up until opening thermostat and water control valve. Standard for warming-up time is approximately
10 minutes at 3,000 rpm.

●

Make sure thermostat opening condition by touching radiator hose ( lower) to see a flow of warm water.

CAUTION:

Watch water temperature gauge so as not to overheat engine.

6.

Stop engine and cool down to less than approximately 50

°

C (122

°

F).

●

Cool down using a fan to reduce the time.

●

If necessary, refill radiator up to filler neck with engine coolant.

7.

Refill reservoir tank to “MAX” level line with engine coolant.

8.

Repeat steps 3 through 6 two or more times with radiator cap installed until the engine coolant level no
longer drops.

9.

Check cooling system for leaks with engine running.

10. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000

rpm with heater temperature controller set at several position between COOL and WARM. 

●

Sound may be noticeable at heater unit.

11. Repeat step 10 three times.

12. If sound is heard, bleed air from cooling system by repeating steps 3 through 6 until engine coolant level

no longer drops.   

FLUSHING COOLING SYSTEM

1.

Install reservoir tank if removed, and radiator drain plug.

If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-88,

"ASSEMBLY"

 .

2.

Remove air relief plug on heater hose.

3.

Fill radiator with engine coolant until engine coolant spills from the air relief hole, then close air relief plug.
Fill radiator and reservoir tank with engine coolant and reinstall radiator cap. 

4.

Run engine and warm it up to normal operating temperature.

5.

Rev engine two or three times under no-load.

6.

Stop engine and wait until it cools down.

Reservoir tank engine coolant capacity 
(At “MAX” level):

  0.8  (7/8 US qt, 3/4 lmp qt)

SMA412B

Radiator drain plug

 : 1.17 N·m (0.12 kg-m, 10 in-lb)

PBIC0954E

ENGINE MAINTENANCE

MA-15

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7.

Drain engine coolant from the system. Refer to 

MA-13, "DRAINING ENGINE COOLANT"

 .

8.

Repeat steps 1 through 7 until clear water begins to drain from radiator.

Checking Fuel Lines

NLS0003T

Inspect fuel lines and tank for improper attachment, leaks, cracks,
damage, loose connections, chafing or deterioration. If necessary,
repair or replace damaged parts.

Changing Air Cleaner Filter

NLS0003U

VISCOUS PAPER TYPE

The viscous paper type filter does not need cleaning between
replacement intervals. Refer to 

MA-6, "PERIODIC MAINTE-

NANCE"

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Changing Engine Oil

NLS0003V

WARNING:

●

Be careful not to burn yourself, as the engine oil is hot.

●

Prolonged and repeated contact with used engine oil may
cause skin cancer; try to avoid direct skin contact with
used engine oil. If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as possible. 

1.

Open oil filter installation/removal cover on engine undercover.

2.

Warm up engine, put vehicle horizontally and check for engine
oil leakage from engine components. Refer to 

LU-6, "ENGINE

OIL LEAKAGE"

3.

Stop engine and wait for 15 minutes.

4.

Loosen oil filler cap, then remove drain plug.

5.

Drain engine oil. 

6.

Install drain plug with new washer. Refer to 

EM-26, "OIL PAN AND OIL STRAINER"

 .

CAUTION:

●

Be sure to clean drain plug and install with new washer.

7.

Refill with new engine oil.
Engine oil specification and viscosity:
Refer to 

MA-10, "RECOMMENDED FLUIDS AND LUBRICANTS"

 .

SMA803A

SBIA0329E

Oil pan drain plug:

 : 34.3N·m (3.5kg-m, 25ft-lb)

PBIC0993E

MA-16

ENGINE MAINTENANCE

Engine oil capacity (Approximate):

                                                                                                                                                                  Unit: 

 (US qt, Imp qt)

CAUTION:

●

The refill capacity depends on the engine oil temperature and drain time. Use these specifica-
tions for reference only.

●

Always use oil level gauge to determine when the proper amount of engine oil is in engine.

8.

Warm up engine and check area around drain plug and oil filter for oil leakage.

9.

Stop engine and wait for 15 minutes.

10. Check the engine oil level. Refer to 

LU-6, "Inspection"

 .

Changing Oil Filter

NLS0003W

REMOVAL

WARNING:

Be careful not to get burned when the engine and engine oil may be hot.

1.

Open the oil filter installation/removal cover on engine under-
cover.

2.

Using the oil filter wrench (SST), remove the oil filter.

CAUTION:

●

The oil filter is provided with a relief valve.
Use genuine NISSAN oil filter or equivalent.

●

When removing, prepare a shop cloth to absorb any
engine oil leakage or spillage.

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Do not allow engine oil to adhere to the drive belts.

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Completely wipe off any engine oil that adhere to engine
and vehicle.

INSTALLATION

1.

Remove foreign materials adhering to the oil filter installation surface.

2.

Apply engine oil to the oil seal circumference of new oil filter.

3.

Screw oil filter manually until it touches the installation surface,
then tighten it by 2/3 turn. Or tighten to specification.

Drain and refill

With oil filter change

Approximately 5.6 (5-7/8, 4-7/8)

without oil filter change

Approximately 5.0 (5-1/4, 4-3/8)

Dry engine (engine overhaul)

Approximately 6.7 (7-1/8, 5-7/8)

PBIC0137E

SMA010

Oil filter:

 :17.6 N·m (1.8 kg-m, 13 ft-lb)

SMA229B