G. I went to Wal Mart and bought the Rotella T Shell 5W-40 $14 a gallon and the $2 SuperTech ST7317 filter, its 3.25" long so it extends past the frame on the under side. A $16 oil change beats $8 a quart Mobil 1 V Twin and a $12 triumph filter. There are alot of filter you could use. Here is a partial list of oil filters that others have listed in the past you can buy them at the auto parts store, in no special order: STP SM017, Bosch 3300, Napa Gold 1358/1365, K & N KN-191, ST 6607, Baldwin B1400, Amsoil SMF103C, for those that like a little extra filter area, Purolator Pure One PL14610, Mobil M1-110 and Bosch 3323. Plenty to choose from. The oil is up to you.
