Air in the brake system can make your brake pedal feel spongy and vague. You should flush the fluid every two or three years, ...

Refresh Brake Fluid with Clear Tubing After emptying the reservoir, fill it up with fresh ... simply start at the rear of the car first, and bleed out the 2 rear calipers/wheel cylinders.

If you continue, fill the reservoir almost to the top ... For front-wheel drive or diagonal split-brake systems: Passenger ...