Dexron-II should work. Hard to find shops that can do this, unless there's master-mechanic that's 50-yrs old or more!
Just take your time and be careful and meticulous. There's lots of brass parts that can get chewed up by screwdrivers, so go slow and careful. The acetone/ATF mix has good penetrating/anti-seize functions, so perhaps wipe some of that over everything to start loosening overnight (except rubbers on slides). Also if you have JIS screwdrivers, screws will come out easier without slipping. Impact screwdriver set can work to loosen tough ones.
https://www.harborfreight.com/impact...ase-37530.html