I’ll probably repeat it a bah-jillion times but it is worth repeating: if you are bleeding hydraulic brakes, mineral oil and DOT fluid ARE NOT INTERCHANGABLE! It’s kind of like when they tell you not to put diesel in a regular gas engine. And in this case, super faulty braking can be the result. Thing is that DOT fluid is classified by number, from 1 to 5. The higher the number, the more head the fluid can resist therefore helping the braking accuracy when you are super grinding on the brakes, especially you downhill folk.