Safety chains
Always use a suitable chain between your vehicle and the trailer. The safety chains should be crossed and should be attached to the hitch, not to the vehicle bumper or axle. The safety chains can be attached to the bumper if the hitch ball is mounted to the bumper. Be sure to leave enough slack in the chains to permit turning corners.
See also:
Removing spots
Remove tar and oil spots, industrial dust, insects,
and tree sap as quickly as possible from the
surface of the paint to avoid lasting damage or
staining. Special cleaning products are available ...
Temperature
High temperatures accelerate the rate of corrosion
to those parts which are not well ventilated. ...
Heated seats (if so equipped)
Do not use or allow occupants to use
the seat heater if you or the occupants
cannot monitor elevated seat temperatures
or have an inability to feel pain in
those body parts in contact with ...