I'm rebuilding the master cylinder on my '49 Jeepster. I have an old Motor's Auto Repair Manual that has pretty detailed instructions for disassembling, cleaning, and re-assembling the master cylinder. It says to soak the parts in "alcohol", and I can't figure out what type of alcohol to use. Rubbing? Denatured? Also, I'll probably get a rebuild kit, but if I were to reuse any of the rubber parts, can/should I soak them in the alcohol too? Any advice is much appreciated.