Hi' I own a 2002 audi a6 avant. An oil symbol has appeared on my instrument board with the word sensor beside it. A near by shop is telling me I am looking at an expensive fix. I amniotic sure I am getting honest feedback. Hat should I do and is this something I can fix. Thank you much
Sensor advisory beside a oil symbol in dash board. 4k miles ago I had the oil changed to synthetic oil sinse then
every 3 weeks or so I get a low oil indicator and I add a quart which lasts another 3 weeks or so. Before that oil
change I had no issues with the vehicle.