I have taken my turbo of because i was loosing oil somewhere, there was a lot of oil just behind the impeller for the intake(there was loads of oil just behind the housing the impeller came off with the housing if you get what i mean) is this suppose to be like this. Also here is the part num of the turbo that was on, KO3 026CF5018918 AND ALSO A NUM ON THE HOUSING WHICH IS 53041015066, is this the ko3s(if thats what it is called) and not the standard ko3. thanks for help in advance.