Tell you Dodge/Ram guy the best thing he can do to help his turbo is allow it to cool down before shutting off the engine.
I have tow friends with Rams that have had to replace turbos. Interesting both were able to get the turbo replaced quickly as the dealer had them in stock. What does that tell you about the Ram turbo issue.
Next best is get a Duramax that has a liquid cooled turbo.