Vehicles using M840T engine list:
Recommended oil for engine M840T 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 M840T engine
SAE 0W-40
ACEA C3
API SN
BMW Longlife-14 FE+
Most common problems, symptoms & fixes for the M840T engine.
Engine M840T
Symptoms:
- Loss of power or reduced engine performance
- Rough idling or engine misfires
- Unusual engine noises such as knocking or ticking
- Check Engine Light (CEL) illumination
- Increased oil consumption or visible oil leaks
Diagnosis:
- Perform a thorough diagnostic scan using OEM-level diagnostic tools to check for fault codes related to ignition, fuel delivery, or turbocharger systems.
- Inspect ignition coils and spark plugs for wear or damage, as misfires are common.
- Check turbocharger operation including boost pressure and wastegate functionality.
- Examine for oil leaks around the valve cover gasket and turbocharger seals.
- Conduct a compression test to rule out internal engine wear or damage.
- Inspect the intake and exhaust systems for blockages or leaks that could affect performance.
Fixes:
- Replace faulty ignition coils or spark plugs to resolve misfires and rough idling.
- Repair or replace leaking gaskets and seals to prevent oil loss and contamination.
- Service or replace the turbocharger if boost pressure is insufficient or if mechanical damage is detected.
- Clean or replace clogged air filters and ensure proper intake airflow.
- Update engine software if manufacturer releases improvements addressing known issues.
- Address any detected internal engine damage with professional engine rebuild or component replacement.
Prevention:
- Adhere strictly to the manufacturer’s recommended maintenance schedule, including timely oil and filter changes using specified high-quality synthetic oils.
- Use only approved fuel grades to ensure optimal combustion and prevent deposit buildup.
- Avoid aggressive driving when the engine is cold to reduce stress on turbochargers and internal components.
- Regularly inspect ignition components and replace them proactively before failure.
- Keep the cooling system in optimal condition to prevent overheating and related engine damage.
- Monitor for early symptoms and address them promptly to avoid escalation.
-NO INFO-
Symptoms:
- Loss of power or reduced engine performance
- Rough idling or engine misfires
- Unusual engine noises such as knocking or ticking
- Check Engine Light (CEL) illumination
- Increased oil consumption or visible oil leaks
Diagnosis:
- Perform a thorough diagnostic scan using OEM-level diagnostic tools to check for fault codes related to ignition, fuel delivery, or turbocharger systems.
- Inspect ignition coils and spark plugs for wear or damage, as misfires are common.
- Check turbocharger operation including boost pressure and wastegate functionality.
- Examine for oil leaks around the valve cover gasket and turbocharger seals.
- Conduct a compression test to rule out internal engine wear or damage.
- Inspect the intake and exhaust systems for blockages or leaks that could affect performance.
Fixes:
- Replace faulty ignition coils or spark plugs to resolve misfires and rough idling.
- Repair or replace leaking gaskets and seals to prevent oil loss and contamination.
- Service or replace the turbocharger if boost pressure is insufficient or if mechanical damage is detected.
- Clean or replace clogged air filters and ensure proper intake airflow.
- Update engine software if manufacturer releases improvements addressing known issues.
- Address any detected internal engine damage with professional engine rebuild or component replacement.
Prevention:
- Adhere strictly to the manufacturer’s recommended maintenance schedule, including timely oil and filter changes using specified high-quality synthetic oils.
- Use only approved fuel grades to ensure optimal combustion and prevent deposit buildup.
- Avoid aggressive driving when the engine is cold to reduce stress on turbochargers and internal components.
- Regularly inspect ignition components and replace them proactively before failure.
- Keep the cooling system in optimal condition to prevent overheating and related engine damage.
- Monitor for early symptoms and address them promptly to avoid escalation.
-NO INFO-