How do you top off your hydraulic fluid?

[Joes]

I have used a levered oil can forever, such as an ARES 55010 – 16oz Red Lever Style Oiler Can. This is just an example of the type of oil can. I only get one use from the cheap plastic hose; the petroleum makes the soft plastic rigid. If there was a leak I would pull a vacuum from the caliper using a snap-on brake vacuum; nothing wrong with the fluid, and it can be reused.