Hi CASO - I haven't tried it yet - just wondering if anybody had any experience with it before I give it a try.I'm always leery of additives. Seems there is always some side effect (sort of like prescriptions) you might not anticipate. Just don't want to wish later I didn't just go ahead and do the harder but more permanent work of replacing the seals. There is a tech tip here that Oly provided that explains how to do the replacement, but it doesn't sound real easy. This is just one last look before I jump in and learn my way through that better solution. Dale