[hotcoupe]

I use Dot 5 in my '32 and my '37 1/2 ton, if you decide to change your current brake fluid to Dot5, you will have to completely disassemble all of the hydraulic components and clean them with denatured alcohol. Another thing that I learned, the way that you handle Dot5 is important, when filling the reservoir, avoid creating turbulence, instead of pouring Dot5, insert a rubber hose to the bottom of the reservoir and a small funnel and slowly add the Dot 5. Just the act of pouring Dot5 5 will introduce micro bubbles and make it harder to get a firm pedal.
Tom