[Wayne County Hose]

I have a test bench in my shop for when I rebuild hydraulic cylinders. All cylinders get filled with oil and pressure tested. Now some equipment takes straight hydraulic oil, some take tractor fluid, some take 30 weight oil, etc. Is there one oil I could run in my test unit which would be okay if some oil from this freshly rebuilt cylinder went into the equipment's system? I like to return the cylinder to the customer filled with oil so there are no "bleeding" concerns. I also donlt like filling a cylinder with oil, testing it, then have to purge it. Sometimes, it can get messy.

Thanks, Andy.