tiptop495:
Hey CF, there is no confirmation anywhere that at least the RTO box was even an option for those who knew better than to gear a turbo ■■■■■■■ at max engine speed at 60 mph let alone 90 kmh.Why couldn’t you drive ■■■■■■■ turbo engine’s at max engine speed (2100 revs) for a long time ■■?
Had it weak points about that ■■? The transcontinentals were driven here and for example at night between Paris and Lyon or Bordeaux for hours at 110/120kph without problems so far I know !!!
Don’t speak about fuel consumption, all horses need food if they have to work hard, even weEric,
In this case it’s mostly about the finer points of using the torque to do more of the work at lower engine speed which means more or at least the same amount of work for less fuel.While unnecessary high engine speeds also obviously means more wear.In which case why would anyone want,or need,to gear a turbo ■■■■■■■ to run at 90 kmh at 2,000 rpm +. 
Regardless of the silly speeds which we all know were attainable from a correctly geared one at max engine speed.While the idea of such gearing contradicts everything known about how to correctly gear a truck to make the best,most fuel efficient,use of the torque output since at least the mid to late 1970’s.