See also:

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

ESP® trailer stabilization
If your vehicle with trailer (vehicle/trailer combination) begins to lurch, you can only stabilize the vehicle/trailer combination by depressing the brake firmly. In this situation, ESP® assists yo ...

Removing the towing eye
– Loosen the towing eye and unscrew it. – Attach cover 1 or 2 to the bumper and press until it engages. – Place the towing eye in the vehicle tool kit. ...