Buick Enclave: Fuel
Using the recommended fuel is an important part of keeping this vehicle properly maintained. The correct gasoline helps the engine run smoothly, supports cleaner combustion, and helps maintain the performance and efficiency expected from the Buick Enclave. Fuel quality can affect engine deposits, drivability, emissions performance, and long-term reliability.
To help keep the engine clean and maintain optimum vehicle performance, the use of gasoline advertised as TOP TIER Detergent Gasoline is recommended. This type of gasoline contains enhanced detergent additives that help reduce deposits on fuel injectors, intake valves, and other fuel system components.
Look for the TOP TIER label on the fuel pump to ensure the gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com.
Choosing quality fuel is a simple maintenance habit that can make a noticeable difference over time. Poor-quality fuel or fuel with inadequate detergent content may contribute to rough idle, hesitation, reduced performance, or increased deposit buildup.

- Recommended Fuel. Gasoline Specifications (U.S. and Canada Only). California Fuel Requirements
- Fuels in Foreign Countries. Fuel Additives. Filling the Tank
- Filling a Portable Fuel Container