I had a Scottoiler on my Blackbird and the chain and sprockets were still in great condition at 60,000 km. They work really well but the one thing that annoyed me was no matter how low I set the flow, there was always some fling onto the rear of the bike. Even worse was the gunge that slowly built up in the front sprocket housing. Maybe I could have got away with even less flow. Since then on all my bikes, I've stuck with teflon-based chain waxes. No fling and they seem as effective as oilers if applied regularly. I've used Maxima or Tirox for several years.