Yep - it is about as simple as it gets - gravity fed to the nozzle, with a bit of adjustment on the reservoir to control flow. Key issue is you've got to remember to turn the things off when you park up or your back tyre will be sitting in a pool of oil!

http://www.tutorochainoiler.com/

�20 on eBay at the moment: http://compare.ebay.co.uk/like/15087...ype=pla&crdt=0

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