i have an 04 f250 6.0 psd. i bought it with 145k miles. it already had a reman turbo on it and im not sure if that was the only replaced one or not. it started getting a whinning noise and then smoking so i replaced it with another turbo off a truck wit 22k miles that was a late model 03. it has been on there for 2 months and maybe 3k miles. it is starting to whine again. all i ever pull with it is an 18' dovetail with a 1700lb dragster. only mods to the truck is edge juice w/ attitude and i never turn it past level 2 and it is straight piped and has the stock air box with an AFE oem replacement filter. it hasnt lost any boost or power and spools and runs great. its not smoking...yet... anyone have any ides on what could cause this truck to keep blowing turbos?