Hi there i have an Audi A6 Avant 1.8T 2000, the car smokes quite badly white with the smell of oil. There is no power loss, no hesitation on acceleration and no rough idling. I am unsure what to do and i cant take it to audi dealership as the car is untaxed. I suspect the turbo but wouldnt that cause a loss of power? The car was stud for a few months as well before i purchased it.😔🤔👍