Thoughts on drive belt dressing? I've never used it in vehicles, but I have an ag pump that runs via two big ass belts that are totally exposed to weather. The longer I can keep them running, the less expenses I have, since I'm not sure these are belts I could change by myself. If dressing can help prolong their life, I'll use some. Or if it has the opposite effect - i.e., "short term fix, then increased degradation", then I won't.