I'm not crazy, the attack has begun.
I'd say that fits in with my 1 in 1000 events, then?No, I hadn't missed Donald's point, I just said, I'd never experienced any problems with new or used cars.
I'd also say that it is not worth changing the oil if you have a deep pocket and like gambles;-
Probability of failure; 1:1000 (say)
Cost of oil change; £50 (say)
Tipping point of gearbox price where it is worth while; £50,000
Ergo, cheaper to not do it.
However, that is of no consoluation whatsoever if you suffer from this, and also it would be my proper advice that in any case, this DOES lead to a reduced box life over 100k miles, so it is not worth doing if;
a) it's not your car
b) you are happy with a gamble and don't plan on keeping the car beyond 6~8 years
c) you are happy if your car fails at 100k miles
If any of those apply, forget my advice, I am needlessly worrying you and gearbox failures never happen....
.... oh, hang on ....