My 1995 Ranger has 385000 miles on it.
What more is there to say?
I don't do much to maintain it, either.
I probably change the oil about every 10000 miles.
It probably hasn't had a tuneup in 200000 miles.
I expect that the drivetrain would keep going to a million miles.
The only issues I've had in the past few years have been suspension:
rear leaf-spring brackets rusted away and replaced;
front sway-bar link broke.
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