Subaru Crosstrek Manuals 2018 Crosstrek Owner's Manual | Page 333

Driving tips/Catalytic converter exhaust fumes are entering the v eh i cl e , h av e t h e p r o b l e m checked and corrected as soon as possible. If you must drive under these conditions, drive only with all windows fully open. . Keep the rear gate closed while driving to prevent exhaust gas from entering the vehicle. Catalytic converter your vehicle checked and repaired by an authorized SUBARU dealer. . Do not apply undercoating or rust prevention treatment to the heat shield of catalytic converter and the exhaust sys- tem. . Do not drive with an extremely low fuel level. WARNING NOTE Due to the expansion and contraction of the metals used in the manufacture of the exhaust system, you may hear a crackling sound coming from the ex- haust system for a short time after the engine has been shut off. This sound is normal. 8-3 The catalytic converter is installed in the exhaust system. It serves as a catalyst to reduce HC, CO and NOx in exhaust gases, thus providing cleaner exhaust. To avoid damage to the catalytic converter: . Use only unleaded fuel. Even a small amount of leaded fuel will damage the catalytic converter. . Never start the engine by pushing or pulling the vehicle. . Avoid racing the engine. . Never turn the ignition switch to the “OFF” position while the vehicle is moving. . Keep your engine tuned-up. If you feel the engine running rough (misfiring, back- firing or incomplete combustion), have . Avoid fire hazards. Do not drive or park the vehicle anywhere near flammable materials (e.g., grass, paper, rags or leaves), because the catalytic converter operates at very high tempera- tures. . Keep everyone and flammable materials away from the exhaust pipe while the engine is running. The exhaust gas is very hot.