To grease the ball or not?

mrnoyb wrote:
You don't lubricate the friction bars on a WDH. Why would you lubricate a hitch ball? If it were necessary to grease the ball, wouldn't the manufacturers say so?

I think the MFG intends to have the interface lubricated but they usually say it in a non-intuitive fashion. Once upon a time I actually looked into it and usually the verbiage is to clean and lubricate the coupler socket.

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Here is a link to the Cequent Group Technical Guide, they own a number of the consumer level towing equipment suppliers. Under the "Safe Towing Guide" they indicate "The coupler socket should be smooth, clean and lightly lubricated" (pg 11) Just did a spot check of the installation manuals for products under their ownership, they have similar reference to lubricating the hitch socket.

Edit: Added Cequent information...and fixed the formatting