Buick Encore: Fuel / Top Tier Fuel

Buick Encore 2020-2025 Owner's Manual / Driving and Operating / Fuel / Top Tier Fuel

GM recommends the use of TOP TIER Detergent Gasoline to keep the engine clean, reduce engine deposits, and maintain optimal vehicle performance. Look for the TOP TIER Logo or see www.toptiergas.com for a list of TOP TIER Detergent Gasoline marketers and applicable countries.

Buick Encore. Top Tier Fuel

Fuel

Recommended Fuel

Use regular unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 87 — (R+M)/2 — or higher. Do not use gasoline with a posted octane rating of less than 87, as this may cause engine knock and will lower fuel economy...

Other information:

Buick Encore 2020-2025 Owner's Manual: Engine Exhaust

Warning Engine exhaust contains carbon monoxide (CO), which cannot be seen or smelled. Exposure to CO can cause unconsciousness and even death. Exhaust may enter the vehicle if: The vehicle idles in areas with poor ventilation (parking garages, tunnels, deep snow that may block underbody airflow or tail pipes)...

Buick Encore 2020-2025 Owner's Manual: Filling the Tank (Capped Fuel Fill)

An arrow on the fuel gauge indicates which side of the vehicle the fuel door is on. See Fuel Gauge. Warning Fuel vapors and fuel fires burn violently and can cause injury or death. Follow these guidelines to help avoid injuries to you and others: Read and follow all the instructions on the fuel pump island...