MP Metal Protector - Displaces water and protects metal surfaces from rust and corrosion. Provides a light film that prevents metal-to-metal contact. Excellent for use on guns, hinges, squeaky mechanical objects, electrical systems and more. Penetrates existing rust buildup. Also dries wet electrical systems. (AMP)

We have used it to free up the door lock on our 5th wheel, lubricate the fold down steps and prevent rust from spreading underneath. We keep a can on board and have helped others free up sticky locks and file cabinets.
          

MPHD Heavy Duty Metal Protector - Made with special rust and corrosion inhibitors. Excellent on metal surfaces, leaves a long-lasting protective coating. Protects against the effects of salt, moisture & chemical corrosion. Works as an undercoat, leaving a wax-like film. Recommended for motorcycle chains. Won’t “sling-off”. Dry to the touch. Doesn't attract dust. (AMH)

We use it to protect metal underneath our RV, to keep things from rusting and we keep a can in the fifth wheel.

Synthetic Multi-Purpose Grease NLGI #2 - Reduces friction and wear in high-speed, high-temperature components like wheel bearings and electric motors. Keeps components running clean and trouble free for outstanding performance and long life. NLGI #2 is the primary wheel bearing recommendation. (GLC).

Don't forget the Trailer wheel bearings.

Synthetic Multi-Purpose Spray Grease - The same great AMSOIL Synthetic NLGI #2 Multi-Purpose Grease in a convenient spray formulation. Ideal for greasing hard-to-reach equipment such as hinges, springs and other common applications. (GLC)

Great for parts of the hitch that need a bit of grease.

Miracle Wash Waterless Wash and Polish Spray Product - This unique dry car wash and polish delivers outstanding performance and quick, easy and economical spray application. No water required. It’s simply the fastest way to spot clean or clean the whole vehicle. (AMW).