It is a silly question, perpetuated by those who think non-stop 'fettling' will preserve mechanical devices indefinitely - the same bunch who can tell the engine is 'smoother' with the glistening clean oil they've just put in at their 3000 miles oil change.
If you can 'feel' the difference after an oil change then you left it too long ;-)
The correct answer is to buy a banger and burn it out once something goes wrong.
The answer you're looking for Humph, is going to be lightweight, NA petrol and Japanese.
Or something with an XUD under the bonnet that was given a damn good Ziebarting at birth!
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