Jeep 3.8 Engine Specifications
The Jeep 3.8 engine, known for its reliability and performance, has been a popular choice among off-road enthusiasts and daily drivers alike. This engine was primarily used in Jeep models from 2007 to 2011, including the Jeep Wrangler and Jeep Liberty. Below are the detailed specifications of the Jeep 3.8 engine.
| Specification | Details |
|---|---|
| Engine Type | V6 |
| Displacement | 3.8 liters (231 cubic inches) |
| Configuration | 60-degree V6 |
| Horsepower | 202 hp @ 5,200 rpm |
| Torque | 237 lb-ft @ 4,000 rpm |
| Compression Ratio | 9.7:1 |
| Fuel System | Multi-Point Fuel Injection |
| Fuel Type | Regular Unleaded Gasoline |
| Ignition System | Distributor-less Ignition System (DIS) |
| Valvetrain | SOHC, 12 valves |
| Weight | Approximately 400 lbs |
Engine Configuration
The Jeep 3.8 engine features a V6 configuration, which allows for a compact design while providing a good balance of power and efficiency. The 60-degree angle between the cylinder banks contributes to the engine’s smooth operation and reduced vibrations. Below are some key aspects of the engine configuration:
- Block Material: Cast iron, providing durability and strength.
- Cylinder Head Material: Aluminum, which helps reduce weight and improve heat dissipation.
- Fuel Delivery: The multi-point fuel injection system ensures optimal fuel atomization and combustion efficiency.
- Cooling System: The engine is equipped with a water-cooled system, which maintains optimal operating temperatures.
Engine Oil Specifications
Proper engine oil selection is crucial for the longevity and performance of the Jeep 3.8 engine. The following specifications outline the recommended oil types and capacities:
| Specification | Details |
|---|---|
| Oil Type | SAE 5W-20 or 10W-30 |
| Oil Capacity (with filter) | 5 quarts (approximately 4.7 liters) |
| Oil Filter | Chrysler part number 5038049AA or equivalent |
Service Intervals
Regular maintenance is essential for keeping the Jeep 3.8 engine running smoothly. Here are the recommended service intervals for oil changes and other maintenance tasks:
- Oil Change: Every 3,000 to 5,000 miles or every 3 to 6 months, whichever comes first.
- Oil Filter Replacement: Replace with every oil change.
- Coolant Flush: Every 30,000 miles or as needed.
- Air Filter Replacement: Every 15,000 to 30,000 miles, depending on driving conditions.
- Spark Plug Replacement: Every 30,000 miles.
- Transmission Fluid Change: Every 30,000 to 60,000 miles.
Conclusion
The Jeep 3.8 engine is a robust and reliable powerplant that has served many Jeep models effectively. Understanding its specifications, configuration, oil requirements, and service intervals can help owners maintain their vehicles in optimal condition. Regular maintenance not only enhances performance but also extends the life of the engine, ensuring that it continues to deliver the power and reliability that Jeep enthusiasts expect.
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