2010 Chevrolet Avalanche Owner's Manual - Page 419

Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Record on page 7‑15. Adding Equipment to the Outside of the Vehicle Things added to the outside of the vehicle can affect the airflow around it. This can cause wind noise and can affect fuel economy and windshield washer performance. Check with your dealer/retailer before adding equipment to the outside of the vehicle. Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure 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. This vehicle can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Gasoline Octane on page 6‑6 and Fuel E85 (85% Ethanol) on page 6‑8. 6-5