My 650 Turbo Copen has covered 77,000 miles and I have owned it for the last 1000 miles. Recently I noticed that the oil level had dropped to halfway down the stick, so I topped up with Magnatec 5-30 oil. There doesn't seem to be any obvious leaks, there was some oily crud around the inter cooler discharge pipe, but this seemed thick and old, I have cleaned it off. I can't see any oil around the turbo discharge pipe , just maybe a little at the bottom of the inter cooler. Is this oil consumption normal? The car runs well and the only sound from the turbo is a sweet woo on acceleration when it boosts up. There is also no obvious smoke from the exhaust.