I go on the premise that "If it ain't broke, don't fix it". The line here is between replacing something that isn't broken and keeping it in good condition, (Preventive Maintenance). There is nothing wrong with auto hubs as long as you maintain them. They generally go bad because the owner never pulls them to clean and re-lubricate them. Even manual hubs will fail if they are not maintained. You can get a kit at any
REAL parts distributor which replaces seals and screws.
That all said, I have manual hubs. They were on the truck when I got it, went bad due to previous owner never having maintained them, and replaced with a set of Warners. The Warners have now been on the truck around 14 years. I do light maintenance on them every couple of years; remove, clean, lightly grease them (too much causes them to stick, don't pack them with grease), re-install with a maintenance kit. The same should be done with Auto hubs. You don't even need to remove the tire.
Good luck,
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