Do not add anything to the oil. The recommended oils meeting the dexos specification are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
Repairs and Inspections Required After a Collision Primary Seat Belts
Warning:Restraint systems can be damaged in a collision. To helpavoid injury and ensure that all parts in need of replacement arereplaced:Replace any seat belt system that was in use during thecollision serious enough to deploy any automatic restraint devicesuch as air bags and seat belt pretensione ...