Not allowing for a cool down idle period after running the engine hard, and driving the daylights out them them before the oil is up to temperature is what shortens the life of turbochargers, both gasoline and diesel engines.
Yep, I'm very ginger with the go-pedal until I'm up to temp and always allow for at least a short cool-down, sort of depends on how I was just recently driving. Tow the 10K # dry camper, ~`5min idle cool-down. A highway drive with nothing hooked behind, maybe 15-30 sec of idle and then shut down.
I also think the warm-up/cool-down is what's going to be the long-term issue w/gasoline turbo vehicles. My buddy likes to joke that his wife's car's starter bendix is still spinning when she's a block down the road. A turbo of any sort isn't going to last long under that sort of operation.
