With Volvo no longer providing OE versions of the ATE manufactured 240 series master cylinder and instead just providing reman units, does anyone know the proper procedure for storing used master cylinders? There are few opinions out there on the web on the subject, and, those opinions are all over the map. About the only thing everyone can agree upon is that the units should be stored in a plastic bag due to the fact that brake fluid attracts moisture/water. Question of the day is whether that plastic bag should contain a unit that is either empty or full of brake fluid. I have my recent junkyard acquired units capped off with junkyard brake lines - I cut the ends and then use a vice-grip to seal the ends. Some on the internet have suggested draining the brake fluid and then cleansing the the internals of the cylinder with acetone. Some have suggested taking the unit apart and storing the piston and all in pieces. That scares me. I'm not wild about going the rebuild or the aftermarket route when the push comes to shove on my own master cylinder. Rebuilt master cylinders apparently don't have a great opinion or track record
out there on the web. Does anyone have an opinion?