Well heres a 4 oz bottle that you can add on each oil change--for us who believe the motors could use it--I think it would not hurt to use in ALL motors but $10 a tiny bottle is not too cheap..
Also about the FRAM filters, I looked at a cartridge filter made by FRAM and one by Purolator and they look the same and they felt the same. Those you can look at where as the spin on type unless you cut it open you don't know.