I have to admit, I'm completely puzzled as to how buying or replacing anything could be as easy as dripping/spraying something into the bearings every so often.
Are you in the US? If so, I'd be extremely surprised if any ststions from that far away had an effect on reception here, and if they did, tuning to the off frequencies would make reception worse, not better. Now if you want to use the truck in one of the countries that uses even decimal...
Power Coop Credit Union. You have to either work at a power coop or be related to someone who does. Tiny, one location credit union. They don't have even a single atm.