OSCO chain oiler

[Krtek]

This is a little gadget I'm very happy about. It's a hand operated chain oiler than you attach permanently to the bike. It has a little lever that you have to pull once, every 150 to 300 miles depending on weather, while riding slowly and your chain will always be perfectly lubricated and clean and the earth shall smell of roses evermore.
If you've been riding in heavy rain, just give the chain some extra oil.

The OSCO is not really cheap. The lowest price I could find right now translates to 94 pounds. On the other hand, chain lube in spray cans doesn't exactly come free either.

For refills, I got a bottle of bio-degradable chainsaw oil. Works well, it's cheap and it's sort of green. What more could you want?

The OSCO is great for long trips since one filling of the reservoir will last for thousands of kilometres, and you don't need to pack a bulky spray can. Refilling it is a matter of minutes (which are spent locating the refill bottle since it's so long since you needed it).
It can be fitted to any chain-driven bike, it's small and elegant. It can be positioned at a number of different angles and still work.
It never leaks and it always gives the same volume of oil, independent of temperature.

No English text, but some pics here.

I'm leaving out Manufacturer/Retailer backup because I have no idea. Bought the thing, installed it, like it. That'll be all, thanks.