[1320racer]

Brake fluid always had to be, should have been changed and it’s the root cause of “frozen” calipers.

That said changing race car brake fluid is even more important especially if you don’t use DOT5 silicone which is the only fluid that does not overheat and burn and the only fluid I use in my race cars which I change every season. DOT3, 4 and 4.5 pour clear and drain looking like black sludge from excessive heat.