Vehicles using M104.990 engine list:
Recommended oil for engine M104.990 engine.
Ask AI about any Engine code
Questions strictly about engine codes (brand/model/engine type/production years).
| Castrol EDGE 5W-40 A3/B4 | |
|---|---|
| ACEA A3/B4 | ✔ |
| API SP | ✔ |
| BMW Longlife-01 | ✔ |
| MB 229.3 / 229.5 / 226.5 | ✔ |
| Porsche A40 | ✔ |
| Renault RN0700 / RN0710 | ✔ |
| VW 502 00 / 505 00 | ✔ |
| Chrysler MS-12991 | ✔ |
| Ravenol VST 5W‑40 | |
|---|---|
| ACEA A3/B4 | ✔ |
| API SP | ✔ |
| BMW Longlife‑01 | ✔ |
| MB 229.5 / 226.5 | ✔ |
| Porsche A40 | ✔ |
| VW 502.00 / 505.00 | ✔ |
| Renault RN0700/0710 | ✔ |
| Chrysler MS‑12991 | ✔ |
| Mobil 1 FS 5W‑40 | |
|---|---|
| ACEA A3/B3/B4 | ✔ |
| API SN/SM/CF | ✔ |
| BMW Longlife‑01 | ✔ |
| MB 229.3 / 229.5 | ✔ |
| Porsche A40 | ✔ |
| VW 502.00 / 505.00 | ✔ |
| Renault RN0700/0710 | ✔ |
| Chrysler MS‑12991 | ✔ |
| Liqui Moly High Tech 5W‑40 | |
|---|---|
| ACEA A3/B4 | ✔ |
| API SN/CF | ✔ |
| BMW Longlife‑01 | ✔ |
| MB 229.5 | ✔ |
| Porsche A40 | ✔ |
| VW 502.00 / 505.00 | ✔ |
| Renault RN0700/0710 | ✔ |
| Chrysler MS‑12991 | ✔ |
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 M104.990 engine
SAE 10W-40
API SJ
MB 229.0
Most common problems, symptoms & fixes for the M104.990 engine.
Engine M104.990
Symptoms:
- Rough idling and hesitation during acceleration
- Engine misfires or runs unevenly
- Increased fuel consumption
- Check engine light illumination
- Oil leaks around valve cover and camshaft seals
- Overheating or coolant loss
Diagnosis:
- Inspect ignition components such as spark plugs, ignition wires, and coils for wear or damage
- Perform a compression test to check cylinder health
- Check for vacuum leaks around intake manifold and hoses
- Examine fuel injectors for clogging or malfunction
- Inspect valve cover gasket and camshaft seals for oil leaks
- Test coolant system for leaks and thermostat operation
- Scan engine control unit (ECU) for fault codes related to ignition, fuel, or sensors
Fixes:
- Replace worn spark plugs, ignition wires, or coils to restore proper ignition
- Clean or replace clogged fuel injectors to improve fuel delivery
- Repair or replace leaking valve cover gaskets and camshaft seals to prevent oil loss
- Fix vacuum leaks by replacing cracked hoses or gaskets
- Replace faulty sensors (e.g., oxygen sensor, coolant temperature sensor) as indicated by fault codes
- Flush and replace coolant; repair leaks and replace thermostat if overheating occurs
- Regularly service engine timing components if applicable to maintain smooth operation
Prevention:
- Follow recommended maintenance intervals for spark plugs, ignition components, and fuel system cleaning
- Use high-quality engine oil and replace it at specified intervals to protect seals and internal components
- Regularly inspect and replace aging rubber hoses and gaskets to prevent vacuum and oil leaks
- Monitor coolant levels and condition to avoid overheating issues
- Address any engine warning lights promptly to prevent further damage
- Keep air intake system clean and free from debris to ensure proper airflow and combustion
By adhering to these diagnostic steps and maintenance practices, owners can minimize common issues with the M104.990 engine and ensure reliable performance in their vehicles.
Symptoms:
- Rough idling and hesitation during acceleration
- Engine misfires or runs unevenly
- Increased fuel consumption
- Check engine light illumination
- Oil leaks around valve cover and camshaft seals
- Overheating or coolant loss
Diagnosis:
- Inspect ignition components such as spark plugs, ignition wires, and coils for wear or damage
- Perform a compression test to check cylinder health
- Check for vacuum leaks around intake manifold and hoses
- Examine fuel injectors for clogging or malfunction
- Inspect valve cover gasket and camshaft seals for oil leaks
- Test coolant system for leaks and thermostat operation
- Scan engine control unit (ECU) for fault codes related to ignition, fuel, or sensors
Fixes:
- Replace worn spark plugs, ignition wires, or coils to restore proper ignition
- Clean or replace clogged fuel injectors to improve fuel delivery
- Repair or replace leaking valve cover gaskets and camshaft seals to prevent oil loss
- Fix vacuum leaks by replacing cracked hoses or gaskets
- Replace faulty sensors (e.g., oxygen sensor, coolant temperature sensor) as indicated by fault codes
- Flush and replace coolant; repair leaks and replace thermostat if overheating occurs
- Regularly service engine timing components if applicable to maintain smooth operation
Prevention:
- Follow recommended maintenance intervals for spark plugs, ignition components, and fuel system cleaning
- Use high-quality engine oil and replace it at specified intervals to protect seals and internal components
- Regularly inspect and replace aging rubber hoses and gaskets to prevent vacuum and oil leaks
- Monitor coolant levels and condition to avoid overheating issues
- Address any engine warning lights promptly to prevent further damage
- Keep air intake system clean and free from debris to ensure proper airflow and combustion
By adhering to these diagnostic steps and maintenance practices, owners can minimize common issues with the M104.990 engine and ensure reliable performance in their vehicles.