Looking for recommendations on how to store brake & clutch cylinders. I've got a used clutch slave that I took off, but want to keep as a spare. I cleaned it all out, dried it all, but am afraid of just reassembling it storing it in a bag for fear of it getting rusty. It will get condensation on it and the bore is bare steel. So if I put brake fluid back in it, the fluid will attract water & it will rust. If I put oil in it, will it be ok to just slap it in the car & bleed the crap out of it??? Will the oil & brake fluid get along or will they cause problems? I would prefer to avoid having to open it up & clean it before use since its the type of thing that if I need it, I probably realized it about 10 minutes before the session starts.