Mr. Bones,
I have not been following your threads. I don't know or recall if I ever warned you about old rubber things. This is true of all rubber things. Everybody knows about tires, but they forget about coolant hoses and brake lines that suffer with the same issue. Fuel lines will warn you when gas runs out on the ground, but that is different too. Those can be destroyed by the alcohol that is in most "motorfuel" these days.
Belts have the good fortune to wear out and so have usually been replaced.
In our group (composed largely of coaches a decade older than yours) we often tell new owners that if you cannot prove it has been replaced, then you should replace it. None of this is all that expensive unless you don't attend to it. Brake fluid also goes bad because it can absorb water. There are devices that can tell if it has, but when you replace the brake lines it is just as easy to refill with new clean fluid.
Coolant does not cease to be anti-freeze, but the corrosion inhibitors do get depleted. Transmission fluid and gear oil don't go bad either, but both do have components that age.
Can a vehicle of this age be reliable enough to travel? That all depends on the owner's attention to detail. We regularly put 8 to 10K per year on our '73, and last year's big repair underway was a taillight bulb.
Use her an enjoy the freedom. They like to be run.
Matt
I forgot to mention that you should probably look to replace what ever converter is still in there. If it is original, it may still work, but the new ones are so much better that changing it out for a new 3+stage smart unit could save you the cost of the house battery.
Wish smooth and level roads.
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.