800 mile roadtrip

Heck I am somewhat concerned every time I take my 95 Ram 3500 Cummins out for a trip. Bought i brand new. 225,000 mi. ain't nothing for a Cummins, but it is what 28 years old. BUT I have hanged the Trans fluild and antifreeze a couple of times. added some brake fuild once, but I did have to replace the starter and a PS hose once. Oh yea, I replaced the engine shut of solinoid once. It did get a new set of tires 8 years ago.
I had to tighten the gooseneck ball a few times.
OK I admit the original shocks are bad.