Kelsey Hayes caliper pistons

I rebuilt my KHs in 99, and installed DOT5. Absolutely no problems. Car now sits outside all winter,for at least 6 months of the year, with no attention at all.
FWIW, pad replacement is super easy,as well. Another thing I like is theres no slider to stick and burn up a pad or rotorface.They also have great seal retraction, which may help with fuel mileage.And excellent feel.