For the clock in Diamon Plains.
use it to fix the clockyou use the oil can in wild west island to fix the bell
Oil the clock tower's gears.
You use it to oil the grand clock (Diamond Plains) to get the trains moving.
grease the gears
you oil the gears in the tower
You oil it.
I think you use one and then trade it back in for the other when your done with it.
Until they are clean.
The trading post in Dusty Gulch
Witch Machinery's do you also have to oil to unlock the clock?
you oil the gears that go to the other large gear
If you have a gold pan trade it with the oil in the Dusty Glutch trade and barter