Hises
Miss Roberta,
If a hose has any indication such as you describe, do indeed get rid of it, no exception. For whatever reason, what ever flows through the hose will keep on leaking internally throughout the walls of the hose. Pressure can actually "bubble" up the inside and actually block flow, and still looking good on the outside, and even pass a flex test. Had it happen on a hydraulic brake line causing the brakes to lock without warning. It generally can happen when the hose is assembled, though rare, or with age.
T88