Hey guys... I've pulled a set of hydro wheel motors from a Walker and i'm looking to store them indefinatally until they are needed. I cleaned up the outside of the hydro units and would like to know if there's a specific way to store these. I was thinking i'd just wrap them in bags, and set them away in a box in a safe place. Is it necessary to drain the old oil out of the hydros and replace with new oil before storing the units, or will they be fine just the way they are for a few years in the box. Thanks!