As for the brake fluid, I have read alot of information about it. One interesting thing I have read is regarding motorhomes. Reading many articles in Motorhome magazine, they recomend nothing buy Motorcraft brake fluid. On vehicles, like a motorhome that experences severe service few cars will ever see, Motorcraft brake fluid kept the system cleaner and rust free compared to all other brands of brake fluid.
Motorhomes carry lot of weight and the braking system must stop it. At the same time, motorhomes sit for months at a time. I do know out 1986 Coachmen's brake lines are 20 years old and all original! Was it the brake fluid or not? I don't know, but I am sticking with Motorcraft fluid.
If you think different fluid will give you better braking, give up that thought. It ain't going to happen unless your old fluid is wet and it boils in the caliper. If you have that problem, then new fluid will fix the issue. If not, changing fluid won't chnge anythig.
Tom