manf. due to inadequate thread reach issues. The nipple (threaded thing that filter screws onto) is too short (actually the threads on the filter's baseplate are too recessed) and there may not be enough contact to properly hold the filter to your car. If it falls off or leaks, you could suddenly loose oil pressure and/or most of your oil. In case you were wondering; this isn't good at all for your engine!

thanks.

that includes the "US" made Bosch one that online Audi parts stores sell. Must look at threads next time. Good info.

you can't go wrong with those..