I have an 2003 Audi a4 with 77,000 miles. Just started buring a lot of oil, about a quart in a day and a half of just local driving, to work and home, probably about 35 miles a day max. Could this be a problem with the seals in the turbo, because there is no oil dripping out? Is the oil passing through the turbo and buring out in the exhaust because of bad seals?