Lynnmor, thanks for expanding on that article. It's no wonder so much misinformation of all kinds gets spread around when people who write such articles can't be bothered to do some actual research. Where do you suppose he got that piece of errata from?
I have no real issues with the EZ Lube system, and have made use of it for the first 7 years of ownership. I am now of the opinion that it is pretty much a marketing ploy. A well packed wheel will not need added grease until the next repacking, unless we're talking huge miles, unlikely with a normal RV trailer. However I definitely don't see the need for annual or biennial repacking. In my mind every 5 years of normal usage is fine. Obviously high mileage changes things a bit.