Nissan SD25 Engine Specifications
The Nissan SD25 engine is a robust and reliable diesel engine that has been widely used in various Nissan vehicles, particularly in light-duty trucks and vans. Below are the detailed specifications of the SD25 engine.
| Specification | Details |
|---|---|
| Engine Type | 4-Cylinder, Inline Diesel |
| Displacement | 2.5 liters (2488 cc) |
| Bore x Stroke | 85 mm x 100 mm |
| Compression Ratio | 22.0:1 |
| Power Output | 75 hp (56 kW) at 4,200 rpm |
| Torque | 140 Nm (103 lb-ft) at 2,400 rpm |
| Fuel System | Indirect Injection |
| Cooling System | Water-cooled |
| Fuel Type | Diesel |
Engine Configuration
The Nissan SD25 engine features a straightforward and efficient design that contributes to its durability and performance. Below are the key aspects of its engine configuration:
Engine Layout
– Inline 4-cylinder configuration
– Compact design suitable for various applications
Fuel Delivery System
– Indirect injection system enhances fuel efficiency and reduces emissions
– Designed for optimal combustion and power delivery
Cooling System
– Equipped with a water-cooled system to maintain optimal operating temperatures
– Ensures longevity and performance stability under various conditions
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the Nissan SD25 engine. Below are the recommended engine oil specifications:
| Specification | Details |
|---|---|
| Oil Type | SAE 15W-40 or 10W-30 |
| Oil Capacity | 5.5 liters (including oil filter) |
| Oil Change Interval | Every 5,000 km or 3,000 miles |
| Oil Filter | Replace with every oil change |
Service Intervals
Regular maintenance is essential to keep the Nissan SD25 engine running smoothly. Below are the recommended service intervals:
General Maintenance Schedule
– Every 5,000 km (3,000 miles) :
– Change engine oil and oil filter
– Inspect air filter and replace if necessary
– Check coolant level and top up if needed
– Every 10,000 km (6,000 miles) :
– Inspect fuel filter and replace if necessary
– Check and adjust valve clearance
– Inspect belts and hoses for wear
– Every 20,000 km (12,000 miles) :
– Replace fuel filter
– Inspect and clean the intake system
– Check exhaust system for leaks or damage
Additional Considerations
– Always use high-quality engine oil that meets the specifications outlined above.
– Keep an eye on engine performance and address any unusual noises or vibrations promptly.
– Regularly check the condition of the battery and electrical systems to ensure reliable starting and operation.
Conclusion
The Nissan SD25 engine is a well-engineered diesel powerplant that offers a balance of performance, efficiency, and durability. Understanding its specifications, configuration, oil requirements, and service intervals can help owners maintain their vehicles effectively. Regular maintenance not only prolongs the life of the engine but also ensures optimal performance, making the SD25 a reliable choice for various applications.
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