2009 Toyota Tacoma Owners Manual - Page 497

6-1. Specifications NOTICE n Notice on gasoline quality l Do not use leaded gasoline. Leaded gasoline can cause damage to your vehicle's three-way catalytic converters causing the emission control system to malfunction. l Do not use gasohol other than that stated here. Other gasohol may cause fuel system damage or vehicle performance problems. l Use of unleaded gasoline with an Octane rating lower than 87 may result in engine knocking. Persistent knocking can lead to engine damage. n Fuel-related poor driveability If after using a different type of fuel, poor driveability is encountered (poor hot starting, vaporization, engine knocking, etc.), discontinue the use of that type of fuel. n When refueling with gasohol Take care not to spill gasohol. It can damage your vehicle's paint. 6 Vehicle specifications 481