From what I've read, DOT 5.1 is a silicone based fluid with a higher boiling point than DOT 4. If I recall correctly, silicone based brake fluids do not attract moisture. So, why not use the 5.1?
Also, my understanding is that to change the brake fluid, I should open the reservoir, then attach a vacuum pump and pull all the fluid into a container in between the two. After that, I should pour in new fluid, and pump the brake until no more bubbles appear, and then close the bleed valve. Is that about correct?
Also, my understanding is that to change the brake fluid, I should open the reservoir, then attach a vacuum pump and pull all the fluid into a container in between the two. After that, I should pour in new fluid, and pump the brake until no more bubbles appear, and then close the bleed valve. Is that about correct?