I just repacked my 4 wheels for the first time on my 2019 21C and found one seal installed backwards from the factory. Grease went into my brakes. Don’t wait 3 years for your first relube. Don’t use grease zero as it might push grease into your brakes. You can’t see what is happening. Once you know it’s done right it should be fine for 3 years with average trailer use. It cost a friend of mine $350 to have 4 done. I use Lucas red and tacky.
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