There are two methods for improving the operation of the slider top for your HydraPak reservoir:
- Avoid filling the reservoir above the maximum fill line. If you over-fill the reservoir, it will create pressure on it, making the top harder to operate. If you leave some room, the pressure is reduced making the slider operate more easily.
- Apply some food-safe lubricant to the tracks of the reservoir. We recommend silicone, glycerin, or beeswax-based lubricants for our products. Don't use oil-based lubricants, as they can make your system sticky, which makes the slider more difficult to operate. Many natural lip balms, such as Burt's Bee's, will work for this purpose. Smear a small amount on the tracks and it will make the slider action much smoother.