Originally Posted by alfaguy
I just tried this filter and I must say it seems like a poor fit for the WRX.
IMO it threads on enough to be safe. Other filters that are speced for subarus like the amsoil sdf20 have the same issue. I have been running amsoil filters for about 60,000 miles with no issues, so thats probably why it didnt bother me as much as it would someone who is used to it threading on more.