Stopping the engine
The ignition switch should be turned off only when the vehicle is stopped and the engine is idling.

Do not stop the engine when the vehicle is moving. This will cause loss of power to the power steering and the brake booster, making steering and braking more difficult. It could also result in accidental activation of the “LOCK” position on the ignition switch, causing the steering wheel to lock.
See also:
Interior lights
When leaving your vehicle, make sure the
lights are turned off to avoid battery
discharge. ...
MMT
Some gasoline contains an octane-enhancing
additive called MMT (Methylcyclopentadienyl
Manganese Tricarbonyl). If
you use such fuels, your emission control
system performance may deteriorate a ...
Refueling in cold weather
To help prevent moisture from forming in the fuel system and the risk of its
freezing, use of an antifreeze additive in the fuel tank is recommended during cold
weather. Use only additives that ar ...
