Vehicles using N74B68 engine list:
- ROLLS_ROYCE - Phantom (420kW) 2017–2025
- ROLLS_ROYCE - Cullinan (420kW) 2018–2025
- ROLLS_ROYCE - Cullinan Black Badge (441kW) 2019–2025
- ROLLS_ROYCE - Ghost II (420kW) 2020–2025
- ROLLS_ROYCE - Ghost II Black Badge (441kW) 2021–2025
Recommended oil for engine N74B68 engine.
| Castrol EDGE 0W-40 R | |
|---|---|
| ACEA C3 | ✔ |
| Renault RN17 RSA | ✔ |
| Kinematic @ 100°C | 13.5 mm²/s |
| Kinematic @ 40°C | 78.3 mm²/s |
| Viscosity Index | 178 |
| Pour Point | -48°C |
| Flash Point | 200°C |
| Density @ 15°C | 0.849 g/ml |
Oil specification key
✔ – Meets the required specification
❓ – Not explicitly stated (use caution; check your vehicle manual)
❌ – Does not meet required specification. Use may cause engine issues.
✔ – Meets the required specification
❓ – Not explicitly stated (use caution; check your vehicle manual)
❌ – Does not meet required specification. Use may cause engine issues.
Answer generated by AI.
Oil specifications for N74B68 engine
SAE 0W-40
ACEA C3
API SN
BMW Longlife-14 FE+
Most common problems, symptoms & fixes for the N74B68 engine.
Engine N74B68
Symptoms:
- Rough idling or misfires during acceleration
- Loss of power or hesitation under load
- Unusual engine noises such as ticking or knocking
- Check Engine Light (CEL) illumination
- Increased oil consumption or visible oil leaks
- Reduced fuel efficiency
Diagnosis:
- Perform a full engine diagnostic scan to retrieve fault codes related to ignition, fuel delivery, or emissions systems.
- Inspect ignition coils and spark plugs for wear or damage, as misfires are common in this engine.
- Check for vacuum leaks or intake manifold gasket failures causing rough running.
- Examine turbocharger operation and boost pressure sensors, especially in Black Badge variants with higher output.
- Inspect valve timing components and variable valve timing (VANOS) system for faults.
- Conduct a compression test to assess cylinder health.
- Check for oil leaks around valve covers and turbocharger seals.
Fixes:
- Replace faulty ignition coils and spark plugs to resolve misfires and rough idling.
- Repair or replace leaking intake manifold gaskets or vacuum lines.
- Service or replace turbochargers if boost pressure is insufficient or if mechanical damage is detected.
- Repair or recalibrate VANOS system components to restore proper valve timing.
- Address oil leaks by replacing gaskets and seals as needed.
- Perform regular oil and filter changes using manufacturer-recommended synthetic oils to maintain engine health.
- Update engine control software if manufacturer releases improvements or fixes.
Prevention:
- Adhere strictly to scheduled maintenance intervals, including oil changes, spark plug replacements, and inspections.
- Use only high-quality synthetic oils and OEM parts to ensure engine longevity.
- Avoid prolonged idling and aggressive driving to reduce stress on turbochargers and valve timing systems.
- Monitor engine performance regularly and address any warning signs promptly.
- Keep the cooling system in optimal condition to prevent overheating and related engine damage.
Following these guidelines helps maintain the reliability and performance of the N74B68 engine in Rolls Royce Phantom, Cullinan, and Ghost II models.
Symptoms:
- Rough idling or misfires during acceleration
- Loss of power or hesitation under load
- Unusual engine noises such as ticking or knocking
- Check Engine Light (CEL) illumination
- Increased oil consumption or visible oil leaks
- Reduced fuel efficiency
Diagnosis:
- Perform a full engine diagnostic scan to retrieve fault codes related to ignition, fuel delivery, or emissions systems.
- Inspect ignition coils and spark plugs for wear or damage, as misfires are common in this engine.
- Check for vacuum leaks or intake manifold gasket failures causing rough running.
- Examine turbocharger operation and boost pressure sensors, especially in Black Badge variants with higher output.
- Inspect valve timing components and variable valve timing (VANOS) system for faults.
- Conduct a compression test to assess cylinder health.
- Check for oil leaks around valve covers and turbocharger seals.
Fixes:
- Replace faulty ignition coils and spark plugs to resolve misfires and rough idling.
- Repair or replace leaking intake manifold gaskets or vacuum lines.
- Service or replace turbochargers if boost pressure is insufficient or if mechanical damage is detected.
- Repair or recalibrate VANOS system components to restore proper valve timing.
- Address oil leaks by replacing gaskets and seals as needed.
- Perform regular oil and filter changes using manufacturer-recommended synthetic oils to maintain engine health.
- Update engine control software if manufacturer releases improvements or fixes.
Prevention:
- Adhere strictly to scheduled maintenance intervals, including oil changes, spark plug replacements, and inspections.
- Use only high-quality synthetic oils and OEM parts to ensure engine longevity.
- Avoid prolonged idling and aggressive driving to reduce stress on turbochargers and valve timing systems.
- Monitor engine performance regularly and address any warning signs promptly.
- Keep the cooling system in optimal condition to prevent overheating and related engine damage.
Following these guidelines helps maintain the reliability and performance of the N74B68 engine in Rolls Royce Phantom, Cullinan, and Ghost II models.