See also:

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Safety guidelines for seat belts,Emergency Tensioning Devices (ETDs)and air bags
WARNING   • Damaged seat belts or seat belts that have been subjected to stress in an accident must be replaced. Their anchoring points must also be checked. Only use seat belts instal ...

Safety notes
WARNING   Work improperly carried out on electronic components and associated software could cause them to cease functioning. Because the vehicle's electronic components are interconnec ...