When you find the right vehicle, religiously change the oil. Many people put this off, don’t. I own a Grand Am with 150,000 miles, and it doesn’t use a drop of oil. They are known for being unreliable. Runs like a top. I would trust it going cross country.
We have 4 vehicles with over 100K and one that probably has around 300K but the od hasn’t worked for many years. We put Slick 50 in everything when it gets past 50K.
My husband is bad, we change the oil every year or if we are going on a long trip. We’ve never had to replace an engine.