Ford calls for Dot3 brake fluid for my truck. I've changed the pads to carbon kevlar and the rotors to slotted ones. I get different braking performance from some improvement above stock to way above stock. The pedal feels more solid at times but not always. The brake lines are stock and 6 yrs. old. I have stainless steel braided brake lines and will change the brake fluid when I install them. It is also an ABS system that works great. Will the Amsoil dot3 be of any help? I do need heavy braking to stop this heavy vehicle.