ENGINE OIL TEMPERATURE HISTORY Check that engine oil temperature history is not stored in ECM. Refer to CONSULT-III Function (GT-R certified NISSAN dealer). ENGINE OIL LEVEL NOTE： Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop it and allow 5 minutes before checking.

1.Pull out oil level gauge and wipe it clean.

2.Insert oil level gauge and check the engine oil level is within the range (A) shown in the figure.

3.If it is out of range, adjust it.

- Adjust the engine oil level 10 mm below the H level within the range A when driving under the condition listed below:

- Higher-RPM (approaching redline) operation
- Frequent high pedal force braking from moderate and higher speeds
- Frequent throttle activation
- Fast revving throughout the RPM range

NOTE：
When checking the engine oil level, insert oil level gauge (1) with its tip aligned with oil level gauge guide.

2 | : Radiator cap
| : Engine front

ENGINE OIL APPEARANCE

- Check engine oil for white turbidity or heavy contamination.
- If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant. Repair or replace damaged parts.

ENGINE OIL LEAKAGE
Visually check engine assembly surrounding area for smears and leakage of engine oil.

Oil smears/leakage status from transmission assembly | Required operation | Reference
Smears*1 | Smears from each part on the engine assembly |

1. Use part cleaner or the equivalent to wipe out smeared oil.
2. Check again for oil leakage.

—
Leakage*2 | Mating surface of oil pan (upper and lower) |

1. Remove oil pan (upper and/or lower).
2. Remove old liquid gasket completely, and then install oil pan (upper and/or lower).
3. Check for oil leakage.

Exploded View (GT-R certified NISSAN dealer)
Drain plug | Replace the drain plug washer, and then check for oil leakage. | Exploded View (GT-R certified NISSAN dealer)
Oil filter |

1. Remove oil filter.
2. Remove foreign materials adhering to oil filter installation surface.
3. Install oil filter.
4. Check for oil leakage.

Removal and Installation
Oil filter bracket |

1. Check the mounting condition of oil filter bracket, oil pressure sensor, oil cooler hose, and oil thermostat.
2. Remove and reinstall above parts if there is malfunction.
   ■ CAUTION ■
   Replace the O-ring and gasket when reinstalling the parts.
3. Check for oil leakage.

Exploded View (GT-R certified NISSAN dealer)
Oil cooler, oil cooler hose, and oil cooler pipe |

1. Specify oil leakage point.
2. If oil leakage is from connection of parts, remove foreign materials from mating surface.
3. Replace with a new gasket.
4. If oil leakage is from the part itself, replace with a new part.
5. Check for oil leakage.

Exploded View (GT-R certified NISSAN dealer)
Mating surface of flywheel housing |

1. Remove flywheel housing assembly.
2. Remove flywheel.
3. Remove rear oil seal, and then check the oil seal mounting surface and crankshaft.
4. Replace the rear oil seal if there is not malfunction.
5. Check for oil leakage.

Exploded View (GT-R certified NISSAN dealer)
Exploded View (GT-R certified NISSAN dealer)
Front oil seal |

1. Remove front oil seal, and then check the oil seal mounting surface and crankshaft.
2. Replace the front oil seal if there is not malfunction.
3. Check for oil leakage.

Exploded View (GT-R certified NISSAN dealer)
Turbocharger |

1. Specify oil leakage point.
2. If oil leakage is from oil tube connected, remove foreign materials from mating surface.
3. Replace with a new gasket.
4. If oil leakage is from the part itself, replace turbocharger only.
5. Check for oil leakage.

Exploded View

- *1: When the oil does not drop.
- *2: When the oil drops.

LIST OF CHECKING POINTS FOR OIL LEAKAGE
Check for engine oil leakage around the following areas:

- Oil pans (lower and upper)
- Oil pan drain plug
- Oil pressure sensor
- Oil level sensor
- Oil temperature sensor
- Oil filter
- Oil filter bracket
- Valve timing control cover
- Intake valve timing control solenoid valve
- Mating surface between cylinder head and rocker cover
- Mating surface between front timing chain case and rear timing chain case
- Mating surface between rear timing chain case and cylinder head
- Mating surface between rear timing chain case and cylinder block
- Mating surface between rear timing chain case and oil pan (upper)
- Mating surface between cylinder block and cylinder head
- Mating surface between lower cylinder block and cylinder block
- Crankshaft oil seals (front and rear)
- Camshaft position sensor (PHASE)
- Turbocharger

OIL PRESSURE CHECK
■ WARNING ■

- Be careful not to get burned, as engine oil may be hot.
- Oil pressure check should be done in “Parking position”.

Check with Multifunction Meter

1.Check the engine oil level. Refer to Inspection.

2.Start the engine and warm it up to normal operating temperature.

3.Check the engine oil pressure with multifunction meter. Refer to System Description.
NOTE：
When the engine oil temperature is low, the engine oil pressure becomes high.

Engine oil pressure | : Refer to Engine Oil Pressure (GT-R certified NISSAN dealer).

If difference is extreme, check engine oil passage and oil pump for engine oil leakage.

Check with Oil Pressure Gauge

1.Check the engine oil level. Refer to Inspection.

2.Remove front undercover. Refer to Exploded View.

3.Disconnect harness connector at oil pressure sensor, and remove oil pressure sensor.

1 | : Oil pressure sensor
2 | : Front final drive
A | : Vehicle under view
| : Engine front

■ CAUTION ■
Never drop or shock oil pressure sensor.

4.Install the oil pressure gauge [SST: ST25051001 (J-25695‐1)] (A) and hose [SST: ST25052000 (J-25695‐2)] (B).

5.Start the engine and warm it up to normal operating temperature.

6.Check the engine oil pressure with engine running under no-load.
NOTE：
When the engine oil temperature is low, the engine oil pressure becomes high.

Engine oil pressure | : Refer to Engine Oil Pressure (GT-R certified NISSAN dealer).

If difference is extreme, check engine oil passage and oil pump for engine oil leakage.

7.After the inspections, install oil pressure sensor as follows:

(1)Remove old liquid gasket adhering to oil pressure sensor and the mating surface.

(2)Apply liquid gasket and tighten oil pressure sensor to the specification.Use Genuine RTV Silicone Sealant or equivalent. Refer to Recommended Chemical Products and Sealants.

Tightening torque | : Refer to Exploded View (GT-R certified NISSAN dealer).

(3)After warming up engine, check there is no leakage of engine oil with running engine.