It's all in the prep! Inspect service and touch everything you can. Know your vehicle, and if you don't read and learn as much as you can. It's dependent on you as much as you are on it!!!!!!
This post right here.
I have the same issue, Im always hearing "new" noises, or feeling "new" vibrations. Its a thing.
But I find that peace of mind comes in knowing that I can fix it, or at least be certain of whats wrong when it does coome. I mean I drive a 25 year old vehicle through some very demanding situations, something is eventually going to break or quit.
4 years ago I was driving with the whole family down to SPI National Seashore. As we were headed down the beach, the ol rig dropped a cylinder. I wasn't certain what happened, but we stopped, I checked out the basics, and decided that my headgasket likely just kicked it. I went to the local auto parts place, grabbed new plugs and changed them on the beach while the kids played in the water. We had a great time and then I nursed the ol girl home afterward on 5 cylinders. Honestly, other than a rough idle, it was un-eventful I changed the HG the next week, and bang, were back in business. If you want to enjoy this lifestyle, you have to learn to just be cool, work the problem, and be prepared to get dirty, or have some changes in plans. For us, that's half the fun of it. My kids still talk about that trip.
Given that I travel with my kids and wife as I said, I do take basic precautions to ensure that we don't get caught out somewhere without basic supplies. I take note of when I lose cell service so I can backtrack to get help if I need to, things like that. Were a pretty self sufficient lot, so its just part of the adventure.