Subaru EJ20X Engine Specifications
The Subaru EJ20X engine is a notable member of the EJ family of engines, known for its performance and reliability. This turbocharged flat-four engine is primarily used in various Subaru models, particularly in the Subaru Legacy and Subaru Outback. Below are the detailed specifications of the EJ20X engine.
| Specification | Details |
|---|---|
| Engine Type | 4-cylinder, horizontally opposed (flat-four) |
| Displacement | 2.0 liters (1994 cc) |
| Turbocharger | Yes, twin-scroll turbocharger |
| Power Output | 280 hp (206 kW) at 5,600 rpm |
| Torque | 350 Nm (258 lb-ft) at 2,000-5,200 rpm |
| Compression Ratio | 8.0:1 |
| Fuel System | Electronic fuel injection (EFI) |
| Fuel Type | Premium unleaded gasoline |
| Valvetrain | DOHC with 4 valves per cylinder |
| Weight | Approximately 150 kg (330 lbs) |
Engine Configuration
The Subaru EJ20X engine features a unique configuration that contributes to its performance characteristics.
Key Features of the Engine Configuration
- Horizontally Opposed Design: The flat-four configuration allows for a lower center of gravity, enhancing vehicle stability.
- Turbocharged Performance: The twin-scroll turbocharger improves throttle response and reduces turbo lag, providing a more dynamic driving experience.
- DOHC Valvetrain: The dual overhead camshaft design enhances airflow and efficiency, allowing for higher RPMs and better performance.
- Intercooler: The engine is equipped with an intercooler, which helps to lower the intake air temperature, improving performance and efficiency.
Engine Oil Specifications
Proper maintenance of the EJ20X engine includes using the right engine oil. The specifications for engine oil are crucial for ensuring optimal performance and longevity.
Recommended Engine Oil
- Viscosity: 5W-30 or 0W-20 (depending on climate conditions)
- Type: Synthetic oil is recommended for better performance and protection.
- API Rating: API SN or higher is recommended for optimal engine protection.
Oil Capacity
| Specification | Details |
|---|---|
| Oil Capacity (with filter) | Approx. 5.5 liters (5.8 quarts) |
| Oil Filter Type | Subaru OEM or equivalent |
Service Intervals
Regular maintenance is essential for the longevity and performance of the Subaru EJ20X engine. Below are the recommended service intervals.
Oil Change Intervals
- Every 6,000 miles (10,000 km) or 6 months, whichever comes first.
- For severe driving conditions (e.g., towing, off-road, or extreme temperatures), consider changing the oil every 3,000 miles (5,000 km).
Other Maintenance Intervals
- Air Filter: Replace every 15,000 miles (24,000 km) or as needed.
- Fuel Filter: Replace every 30,000 miles (48,000 km).
- Spark Plugs: Replace every 60,000 miles (96,000 km).
- Timing Belt: Replace every 105,000 miles (168,000 km).
Conclusion
The Subaru EJ20X engine is a well-engineered powerplant that combines performance with reliability. Understanding its specifications, configuration, oil requirements, and service intervals is essential for any Subaru owner looking to maintain their vehicle in peak condition. Regular maintenance and adherence to recommended service intervals will ensure that the EJ20X engine continues to deliver an enjoyable driving experience for years to come.
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