Hi - just so you are aware, they are joking about motor oil.
Go to the sporting goods store and buy a bottle of dry-style bike chain lubricant. This will go on wet and penetrate into every mm of the bracelet, then the liquid carrier will evaporate away and leave a coating of teflon over the entire bracelet.
Buff it with a soft cloth and you are all done!!
You will be shocked at how much black greasy filth (machine shop dirt) washes out from the interior.