I have a 1.8t (190) & noticed that the oil was a bit low. I bought 0 - 40 castrol edge( i know i should of refered to the forum first!) I have no idea what oil was in there in first place ( was taken off of the AVS & on to fixed 3 mts ago ) & am worried that it may do more damage. My concern is that as my car has done 85k that this oil will be too thin to give good protection. Please can somebody confirm wheather i have made a big mistake or im just worrying about nothing. Thanks in advance.