My wife drives a non-PD TDI....Had run Delvac 1 in it most of the time, tried a change of RTS, and last 2 changes have been Schaeffer's 9000 5w-40. I had thought about going to Amsoil 5w-30HDD for the winter but it seems like these engines throw a lot more iron with a 30wt oil vs. 40. So now I am thinking of trying a 10K run of the John Deere 0w-40 thru the TDI and then I can add it to my little database of UOAs on it to see which works the best consistently. Maybe I will settle on an oil before we wear the car out! Just wanted to see if anyone had had any experience with it in passenger vehicles before....I am using it in my loader tractor that gets started every morning in the winter.