The FL-820S is a Pure One cartridge (with silicon anti-drain back valve) in a Premium casing.
Like stated it's the best for the money. (~$4)
2 other excellent choices of better but more expensive filters are Mobil 1 or K&N. (~$9-10)
Filters to avoid like a bad plague!
FRAM (no drain back valve and glued cardboard media of small area
)
Anything made by Champ (most generic filters, house brand filters, or what you get at an oil change shop) No valve, tiny cardboard filter area!
