After searching i found i local places that sells baldwin oil filters for 3.67 for the oversize filter for my lt1. So far ive used hastings 4.99, wix/napa gold/carqest blue premium for 5.99. pure one for 5. I figured the high end synthetic bosch, mobil, k&n, rp, fram xg were a waste of money i do 3k oci with fs full synthetic.