My boat gets trailered about 20miles/year, previous owner did less. Last few years the trailer was making a loud rattling noise, aluminum trailer. Bearing hubs were not warm but could not figure out the noise. Last year, I pulled the hubs apart and the bearings fell apart on the ground. New bearings, races, seals, Lukas grease and $400.00 later. Ok, should be good forever now as the noise is gone and all good. Throw the boat on the trailer last fall, always careful to only have the wheels under water for as short a period as possible. Boat in storage for the winter and all good. Pull boat out this spring and the noise is back, bearings NFG AGAIN, WTF! Hubs had water in them and bearings rusted and pitted. I know how to repack bearings and how to set the spindle nuts torque, used high end grease, New seals etc, I'm stumped!
Any recommendations on grease? That's the only thing I can think of, thoughts?