See also:

Important ventilating information
If the engine is idling while the vehicle is stopped for a long period of time, open the windows at least 1 inch (2.5 cm) or adjust the heating or air conditioning to bring in fresh air. ...

Engine oil
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Precautions when servicing your vehicle
• Do not work on a hot engine. • Make sure that nothing gets caught in moving parts. • Do not work on a vehicle with the engine running in an enclosed space, unless you are sure you have enough ve ...