Mitsubishi Mitsubishi Outlander 2006-2012 Fuel System Specifications

The 2006-2012 Mitsubishi Outlander is compatible with regular unleaded gasoline with an octane rating of 87 or higher. Using higher octane fuel is not required but may improve performance in certain conditions. Avoid using diesel, E85 ethanol blends, or any fuel containing more than 10% ethanol, as these can damage the engine and fuel system.

Regular maintenance of the fuel system includes replacing the fuel filter every 30,000 miles, inspecting fuel lines for leaks or damage, and using fuel system cleaner additives every 15,000 miles to prevent carbon buildup. Additionally, ensure the fuel cap is tightly sealed to maintain proper pressure and avoid triggering the check engine light.

To replace the fuel filter, first, relieve the fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, usually under the vehicle near the fuel tank. Disconnect the fuel lines and mounting bracket, then install the new filter in reverse order. Reconnect the fuel pump fuse and start the engine to check for leaks.

If your Outlander has poor fuel efficiency, check for clogged air filters, low tire pressure, or malfunctioning oxygen sensors. Ensure the fuel injectors are clean and the spark plugs are in good condition. If the issue persists, inspect the fuel system for leaks or have the engine's computer system scanned for error codes.

To optimize fuel performance, maintain proper tire pressure, use high-quality fuel, and replace air filters regularly. Drive smoothly, avoiding rapid acceleration and braking. Additionally, keep the engine well-tuned by replacing spark plugs and using fuel system cleaners periodically. Reducing vehicle weight and avoiding excessive idling can also improve efficiency.