I have been using the NAPA Gold filter on the RSTD with Shell Rotella 15-40. Good enough for a 500 HP diesel then it must work well in a bike. Same or better SAE values.
What is the general concensus on filter brands? I am switching back to K&N oil filters. Always had good luck with them and the Harleys. Or is NAPA (made by Wix) OK?