Subaru 3.0 H6 Engine Specifications
The Subaru 3.0 H6 engine, also known as the EZ30, is a six-cylinder, horizontally opposed (boxer) engine that has garnered a reputation for its smooth performance and reliability. This engine configuration is unique to Subaru and is designed to provide a low center of gravity, enhancing vehicle stability and handling.
Engine Specifications Overview
The following table provides a detailed overview of the Subaru 3.0 H6 engine specifications:
| Specification | Details |
|---|---|
| Engine Type | Horizontally Opposed (Boxer) 6-cylinder |
| Displacement | 3.0 liters (2999 cc) |
| Compression Ratio | 10.7:1 |
| Power Output | 250 hp @ 6,600 rpm |
| Torque | 219 lb-ft @ 4,400 rpm |
| Fuel System | Multi-Point Fuel Injection (MPFI) |
| Fuel Type | Premium unleaded (91 octane or higher) |
| Valvetrain | DOHC, 24 valves |
| Engine Weight | Approximately 350 lbs (159 kg) |
Engine Configuration
The Subaru 3.0 H6 engine features a unique engine configuration that sets it apart from traditional inline or V-type engines. The horizontally opposed design allows for a lower center of gravity, which contributes to improved handling and stability.
Key Features of the Engine Configuration
– Boxer Engine Design: The cylinders are arranged horizontally, opposing each other, which helps to balance the engine and reduce vibrations.
– Low Center of Gravity: The flat design lowers the vehicle’s center of gravity, enhancing cornering performance and overall stability.
– Smooth Power Delivery: The engine provides a smooth and linear power delivery, making it suitable for both everyday driving and spirited performance.
– Durability: The construction of the H6 engine is robust, designed to withstand the rigors of various driving conditions.
Engine Oil Specifications
Proper maintenance of the Subaru 3.0 H6 engine includes using the correct engine oil. The following specifications outline the recommended oil types and service intervals.
Recommended Engine Oil
– Oil Type: Synthetic or conventional oil can be used, but synthetic oil is recommended for optimal performance.
– Viscosity Rating: 5W-30 is the recommended viscosity for most operating conditions.
– Oil Capacity: The engine oil capacity is approximately 6.9 quarts (6.5 liters) with a filter change.
Oil Change Intervals
– Standard Driving Conditions: Change the engine oil every 6,000 miles (9,600 km) or 6 months, whichever comes first.
– Severe Driving Conditions: If the vehicle is frequently driven in severe conditions (e.g., extreme temperatures, towing, or stop-and-go traffic), consider changing the oil every 3,000 to 4,000 miles (4,800 to 6,400 km).
Service Intervals
Regular maintenance is crucial for the longevity and performance of the Subaru 3.0 H6 engine. Below are the recommended service intervals for various maintenance tasks.
Maintenance Schedule
- Oil Change: Every 6,000 miles (9,600 km) or 6 months
- Air Filter Replacement: Every 15,000 miles (24,000 km)
- Fuel Filter Replacement: Every 30,000 miles (48,000 km)
- Spark Plug Replacement: Every 60,000 miles (96,000 km)
- Coolant Flush: Every 30,000 miles (48,000 km)
- Transmission Fluid Change: Every 30,000 miles (48,000 km)
Additional Considerations
– Timing Belt Replacement: The timing belt should be inspected regularly and replaced every 105,000 miles (168,000 km) to prevent engine damage.
– Brake Fluid Replacement: Brake fluid should be replaced every 30,000 miles (48,000 km) to ensure optimal braking performance.
Conclusion
The Subaru 3.0 H6 engine is a remarkable piece of engineering, combining performance, reliability, and a unique configuration that enhances driving dynamics. Understanding the engine specifications, oil requirements, and maintenance intervals is essential for any Subaru owner looking to keep their vehicle in peak condition. Regular maintenance not only prolongs the life of the engine but also ensures that it continues to deliver a smooth and enjoyable driving experience.
0 Comments