Hi everyone I’m new to this I have an Audi a3 1.6 petrol 2005 sprtback it’s got 84000 on clock . Ok the problem is this when I drive with the heater on full on the car . The car is fine . If I turn the heater off or run the heater on low cold the car starts to smoke a smells of burning oil . Nobody seems to know the answer as the temp gage stays bang in the middle even when smoking . The engine dosent over heat . The radiator fill is clear and dosent use water . I’ve just bought some ristone ring seal to see if that helps . Bacically I thought after changing all the oviouse . Plugs plug leads radiator the list goes on . I’d give this a try . I think the engine needs a rebuild and re ringing but at only 84000 . Not good !!! Put the heater in hot at high it dosent smoke at all . Shame as it’s in fantastic condition . My question is do you think the ring seal will help . Otherwise il get rid of it . Thanks an also compression test was fine too on all 4 cylinders . The rings are letting oil threw to the cat a smoking I think wen on hot the heater is acting as a radiator . I know they are the worse engine but they are reliable . Thank you for your help jon
