2002 Subaru Forester Owner's Manual - Page 255

Starting and operating Engine exhaust gas (Carbon monoxide) D Never inhale engine exhaust gas. Engine exhaust gas contains carbon monoxide, a colorless and odorless gas which is dangerous, or even lethal, if inhaled. D Always properly maintain the engine exhaust system to prevent engine exhaust gas from entering the vehicle. D Never run the engine in a closed space, such as a garage, except for the brief time needed to drive the vehicle in or out of it. D Avoid remaining in a parked vehicle for a lengthy time while the engine is running. If that is unavoidable, then use the ventilation fan to force fresh air into the vehicle. D Always keep the front ventilator inlet grille free from snow, leaves or other obstructions to ensure that the ventilation system always works properly. D If at any time you suspect that exhaust fumes are entering the vehicle, have the problem checked and corrected as soon as possible. If you must drive under these conditions, drive only with all windows fully open. D Keep the trunk lid or rear gate closed while driving to prevent exhaust gas from entering the vehicle. 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 exhaust system for a short time after the engine has been shut off. This sound is normal. - CONTINUED - 8-3