I had some new brake pads installed on my 2000 Tundra and want to flush the brake fluid. I picked up some Valvoline synthetic fluid at AZ and wondered if anyone had any experience with it. I was just looking for DOT 3, but this product says it exceeds DOT 3 and 4 (boiling point I guess). Good choice? Also, how much of this stuff will I need (disc front/drum rear)?