Why would an enigne chew through turbo's?...

[Yauchout]

one of the most common denominators i have seen is not giving the turbo time to cool before turning off the engine especially after a fully loaded pull i see many do this in this west virginia town i deliver to a lot it has a 7% just before dropping into town then you have to run the jakes all the way into town after iv watched them over and over again pull into a pull through space and immediately kill the engine. I have had to let mine idle for nearly 20 minutes in july before after to get the egts in the 350-375 range after the 3 hard pulls going into that town on us 48 unfortunately my original vgt turbo and actuator only made it to 800K ish miles and the exhaust wheel broke off.