I purchased my '99 AEB 1.8T with 5k. I started changing my own oil as soon as I purchased the car. When the first oil sludging failure reports > started surfacing among the Club B5'ers and the discussion of AutoRx surfaced I tried the AutoRx product. I did notice a significant difference in the oil consistency (many clumps) when I ran the "rinse" cycle after the AutoRx. Ever since, I have run the "maintenance" dose and I have not had any problems regarding sludge. I just started my second "cleaning" cycle at 98k on the odo. I run an APR chip and the1.8T is running strong.

Note: I do not work for, nor am I associated with Frank.