Nad wymianą ( zalecane przepłukanie alkoholem-pomimo kompatybilności) należy się zastanowić.

1.
The plain fact remains that vehicle manufacturers use glycol fluid because, with its being designed for the average consumer, it poses the least liability to them. In reality, the answer to the usage question is simple -- the brake fluid type the manufacturer recommends is the best!
In most cases this will be the glycol fluid, the one that is designed to meet all of your brake system's demands and do so with very little fuss.

2.
D.O.T. 5.1 is a glycol fluid designed for certain ABS systems having mechanically cycling proportion valves.
Pzdr,