Buick Encore: 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.
Fuel
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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 2020-2026 Owner's Manual: Connections
The following services help with staying connected. For coverage maps, see www.onstar.com (U.S.) or www.onstar.ca (Canada). Ensuring Security Change the default passwords for the Wi-Fi hotspot and myBuick mobile application. Make these passwords different from each other and use a combination of letters and numbers to increase the security...
Buick Encore 2020-2026 Owner's Manual: Filling the Tank (Capless 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...
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Seat Adjustment
Warning
You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. Adjust the driver seat only when the vehicle is not moving.
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