Switch to silicon brake fluid?

[Joe777]

I have a 46 Ford 1.5 ton dump truck. I’m getting tired of dealing with corrosion in the brake wheel cylinders with DOT 4 brake fluid. I would like any opinions from those that have switched to DOT 5 silicon fluid. Are you happy with the conversion? How did you flush the old fluid out? I live in the northeast so the truck is stored for 5 months of the year. Thanks for any advice on the conversion.