MTPockets1 wrote:
These devices are fine to keep water from entering boat trailer wheels when summersed in water, but that's it! Everything else is a gimmick and does little for your bearings, other than making a mess and if over used, blow out the seals. Properly packed bearings, properly installed seals, and properly installed bearing nut, washer and cotter, will give you thousands of trouble free miles.
I have to disagree. My E-Z Lubes have worked flawlessly for 21,669 towing miles.
(Yes I have kept track of every towing mile since the trailer was new.)