Infiniti QX56 (JA60). Manual - part 674

LUBRICATION SYSTEM

LU-7

< FUNCTION DIAGNOSIS >

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Schematic

INFOID:0000000005149024

PBIC0134E

LU-8

< ON-VEHICLE MAINTENANCE >

ENGINE OIL

ON-VEHICLE MAINTENANCE

ENGINE OIL

Inspection

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OIL LEVEL

• Before starting the engine make sure the vehicle is parked on a flat

and level surface, then check the oil level. If the engine is already

running, turn it off and allow 10 minutes before checking.

• Check that the oil level is within the low (L) to high (H) range as

indicated on the dipstick.

• If the engine oil level is out of range, add oil as necessary. Refer to

MA-13, "Fluids and Lubricants"

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OIL APPEARANCE

• Check the engine oil for a white milky appearance or excessive contamination.

• If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair the broken

parts.

OIL LEAKAGE

Check for oil leakage around the following areas:

• Oil  pan

• Oil pan drain plug

• Oil pressure switch

• Oil filter

• Oil cooler

• Intake valve timing control cover

• Intake valve timing control solenoid valve

• Front cover

• Mating surface between cylinder block and cylinder head

• Mating surface between cylinder head and rocker cover

• Crankshaft oil seal (front and rear)

OIL PRESSURE CHECK

WARNING:

• Be careful not to burn yourself, as engine oil may be hot.

• Put the selector lever in the Park “P” position.
1. Check the engine oil level. Refer to 

LU-8, "Inspection"

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2. Remove engine front undercover using power tool.
3. Disconnect the oil pressure switch harness connector.
4. Remove the oil pressure switch (A).

SMA954C

WBIA0791E

ENGINE OIL

LU-9

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5. Install Tools.

6. Start the engine and warm it up to normal operating temperature.
7. Check the engine oil pressure with engine running under no-load.

Engine oil pressure [Engine oil temperature at 80

°C (175°F)]

Unit: kPa (kg/cm

2, psi)

CAUTION:

If the difference is extreme, check the oil passages and oil pump for leaks and blockages.

8. After the inspections, install oil pressure switch as follows:
a. Remove old liquid gasket adhering to oil pressure switch and engine.
b. Apply liquid gasket and tighten oil pressure switch to the specification.

Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-15, "Recommended Chemical Prod-

ucts and Sealants"

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c. After warming up engine, make sure there is no leakage of engine oil with engine running.

Changing Engine Oil

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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. Remove engine front undercover using power tool.
2. Warm up engine, and check for oil leakage from engine compo-

nents. Refer to 

LU-8, "Inspection"

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3. Stop engine and wait for 10 minutes.
4. Loosen oil filler cap, then remove drain plug.
5. Drain engine oil.
6. Install drain plug with new washer. 

CAUTION:

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

7. Refill with new engine oil. Refer to 

MA-13, "Fluids and Lubricants"

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Engine oil capacity (Approximate):

Tool number

: ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)

WBIA0571E

Engine Speed

Approximate Discharge Oil Pressure

Idle speed

More than 98 (1.0, 14) 

2,000 rpm

More than 294 (3.0, 43)

Oil pressure switch torque

: 14.8 N·m (1.5 kg-m, 11 ft-lb)

Oil pan drain plug

: 34.3 N·m (3.5 kg-m, 25 ft-lb)

KBIA2498E

LU-10

< ON-VEHICLE MAINTENANCE >

ENGINE OIL

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

engine.

8. Warm up engine and check area around drain plug and oil filter for oil leakage.
9. Stop engine and wait for 10 minutes.
10. Check engine oil level. Refer to 

LU-8, "Inspection"

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Drain and refill

With oil filter change

6.5 (6 7/8, 5-3/4)

Without oil filter change

6.2 (6-1/2, 5-1/2)

Dry engine (engine overhaul)

7.6 (8, 6-3/4)