-
What do you think will "pop"? AFAICT what kills old cars is getting a garage bill for "more than it's worth" for something routine (brakes, tyres, suspension bits, etc) rather than the car breaking.
If you're happy with the car, there's no particular reason you can't run it forever if by throwing occasional money at it. You'll still come out ahead over the silly money you could spend on financing another one.
That’s absolutely bonkers money to me still.