Here's the deal. I want to flush my brakes on my 250 and my suburban. With ABS brakes I was told the best way is to gravity flush them. Slower I know but no chance of compressing air into the fluid. My question is, would it be harmful to leave the engines running while I do this? IF it flows faster, I have never done this before, my only concern would be making sure the reservoir remained filled correct? Any one else done this before?
Also whats the best brake fluid to use?
Also whats the best brake fluid to use?
