ive been in cossies that have smelt like that aswell, mine smelt before i took out and rebuilt my engine and used the same turbo, and it still smelt,but like i say after i have had a new turbo on its been smelly of my new car scent magic tree....

So if u think about it the turbos are water cooled, perhaps some oil gets mixed up, i dont know anything about the inside of turbos,....just a thought!