See also:

Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to improve air quality. ...

Guarding against exhaust fumes
WARNING: If you smell exhaust fumes inside your vehicle, have your dealer inspect your vehicle immediately. Do not drive if you smell exhaust fumes. Carbon monoxide is present in exhaust fumes. ...

Driving on hilly or sloping terrain
Although natural obstacles may make it necessary to travel diagonally up or down a hill or steep incline, you should always try to drive straight up or straight down. Note: Avoid driving crosswise ...