Originally Posted by Psimet2001

I hang bikes in the shop as storage before and after repair. By hanging I mean I have single hooks on the wall or above me. I hang one wheel by the hook and let the bike dangle.

Hydraulic bikes that I hang this way don't like to be hung with the levers pointed down. Air creeps into the system. Levers up has never caused a problem. Levers down has led me to have to bleed the brakes to fix them. Road and mtb levers.