2013 Acura TL Owner's Manual - Page 472

Break-in Period, Fuel Recommendation Break-in Period Help assure your vehicle's future reliability and performance by paying extra attention to how you drive during the first 600 miles (1,000 km). During this period: Avoid full-throttle starts and rapid acceleration. Before Driving Avoid hard braking for the first 200 miles (300 km). Do not change the oil until the multi-information display indicates it is needed. You should also follow these recommendations with an overhauled or exchanged engine, or when the brakes are replaced. Fuel Recommendation Your vehicle is designed to operate on premium unleaded gasoline with a pump octane of 91 or higher. If this octane grade is unavailable, regular unleaded gasoline with a pump octane of 87 or higher may be used temporarily. The use of regular unleaded gasoline can cause metallic knocking noises in the engine and will result in decreased engine performance. The long-term use of regular-grade gasoline can lead to engine damage. On vehicles with manual transmission You may hear a knocking noise from the engine if you drive the vehicle at low engine speed (below about 1,000 rpm) in a higher gear. To stop this, raise the engine speed by shifting to a lower gear. 468 2013 TL