CSX 4027
I agree with you about the filter, I believe
Amsoil recommends changing the filter after 6 months. If you haven't seen
Amsoil's By-Pass filter, it's similar in concept to the Frantz filter which used the toilet paper for filtration, only it uses a different type of media which is even better. It's the really small particles in the
oil that does the damage to your motor.