2010 Hummer H3 Owner's Manual - Page 22

1-18 In Brief Engine Oil Life System The engine oil life system calculates engine oil life based on vehicle use and displays a DIC message when it is necessary to change the engine oil and filter. Resetting the Oil Life System 1. Turn the ignition to ON/RUN, with the engine off. 2. Press and release the stem in the lower center of the instrument cluster until the "Oil Life" message is displayed. 3. Once the alternating "Oil Life" and "Reset" messages appear, press and hold the stem until several beeps sound. This confirms that the oil life system has been reset. 4. Turn the key to LOCK/OFF. See Engine Oil Life System on page 10‑11. Fuel E85 (85% Ethanol) Vehicles that have the 5.3L V8 engine (Code P) have a yellow fuel cap and can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Fuel E85 (85% Ethanol) on page 9‑66. In all other engines, use only the unleaded gasoline described under Recommended Fuel on page 9‑64. . Avoid idling the engine for long periods of time. When road and weather conditions are appropriate, use cruise control, if equipped. Always follow posted speed limits or drive more slowly when conditions require. Keep vehicle tires properly inflated. Combine several trips into a single trip. Replace the vehicle's tires with the same TPC Spec number molded into the tire's sidewall near the size. Follow recommended scheduled maintenance. . . . . Driving for Better Fuel Economy Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy possible. . . . Avoid fast starts and accelerate smoothly. Brake gradually and avoid abrupt stops. .