hi ya gang,well my car was burning alot of cas and running realy crappy.when i would come to a stop the car would blow smoke,sombody said that the turbo needs to be rebuilt.i took the tubo out what a pain in the ass to do,i notice that the turbo had no oil in it but was cloged with a lot of carbon.the the spark plugs allso was fould with alot of carbon no oil resido.when i took the hose off one hose that goes from the turbo to the inedcooler had oil in it,the hose going from the air box to the turbo is verry soft and has a split in it where the vacum hose goes into into it.i took the turbo apart and cleand it out verry good and grased the barings and put in new plugs put all back together what a pain cleand the throttel body.when i cranked her up she ran fine whith no smoke about 30 min later same promblem help me out i hope i dident do all that work for nothing.the smoke looks white the car is a 91 940t whith a mitts. turbo.