Talk about a slippery slope. I have not heard of any real turbo 'melting' in forums in a long while. With the 6.7l it seems that they do not like soot, hot (I mean real hot) seems to be the mode that they enjoy. I have noticed that mine will run 1300* at light throttle, light load conditions pretty regular. I have seen the pyro go to 1500* for a short period on a long heavy pull this summer though. Around town just cruising surface streets it will maintain 800* to 1100*, cool down?? In my OLD School of thought 300* before shut down, now you don't want to idle them very long and it seems the temp stays way up for a real long time, mine gets shut off at 400* to 500* usually. I have heard of temps with these up to 1600* under 'normal operating conditions'. The turbo must be made with 'NON-soot compatible, heat resistant Unobtainium' or something.

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07.5 3500 Quad, SRW, 4X4, Laramie, Leathered, Dark Metallic Gray, 6.7, 68RFE, 20K Reese, Ride Rite's, 2 Viair air compressors, Bully steps, Kleinn Locomotive air horns (5 in all), Billet polished locking fuel door, 'A' pillar mount Auto Meter Pryo, PML X-deep trans pan
06 Durango 285 RL 5'er Lifted by KZ