Buick Encore 2020-present Fuel System Specifications

The 2020-Present Buick Encore uses regular unleaded gasoline with an octane rating of 87 or higher. The fuel tank capacity is approximately 14 gallons. For optimal performance, it is recommended to use gasoline that meets ASTM D4814 specifications. Compatibility with ethanol-blended fuels up to E15 is supported.

Regular maintenance of the fuel system includes inspecting fuel lines and connections every 15,000 miles, replacing the fuel filter every 30,000 miles, and ensuring the fuel cap is tightened properly. Fuel injectors should be cleaned every 60,000 miles, and the fuel tank should be checked for any signs of corrosion or damage. Always use the recommended fuel type to prevent system contamination.

To replace the fuel filter, start by turning off the engine and letting it cool. Locate the fuel filter, usually near the fuel tank or along the fuel line. Use a filter wrench to loosen and remove the old filter. Install the new filter by hand tightening it in a clockwise direction. Ensure all connections are secure and check for leaks before starting the engine. Dispose of the old filter responsibly.

Common issues include poor fuel economy, reduced engine performance, or difficulty starting the engine. Check for loose or damaged fuel caps, clogged fuel filters, or faulty fuel sensors. If issues persist, use an OBD-II scanner to check for trouble codes and consult a professional mechanic for further diagnostics and repairs.

To optimize fuel efficiency, maintain proper tire pressure, remove extra weight from the vehicle, and drive at consistent speeds. Avoid aggressive acceleration and braking. Regularly tune up the engine, and ensure the air filter is clean. Using cruise control on highways can also help improve fuel economy. Refer to the owner's manual for additional tips specific to your Buick Encore.