I have a '14 VW Passat 1.8L Turbo and run Castrol 0w40. I am on my second oci since I bought it and noticed it consumes about 1/5 of a quart of oil by the 5,000 mile mark. 95% of my driving is highway mileage and this car is my first experience with a Turbo. I was curious if that is a normal amount of oil consumption at that mileage.