Gravity bleed with 2 jars on 2 wheels concurrently.
I gravity bled, which got more bubbles out than whatever the dealer did.
- Have a 32oz can ready. I use Valvoline from AutoZone
- "Hot lap" the car, brake many times before starting the job. This gets the brake fluid warm, easier to flow
- Use a syringe or turkey baster and suck out most of the old fluid from the reservoir
- Jack up the front end of the car and support front end, take off wheels... obviously
- Mason jar + clear hose that barely fits over the bleeder screw. I don't recall the size, I can get this when I get home. I use small zip ties that tie onto the end of the hose on the bleeder screw nipple so they don't pop off during bleeding. The hose does not need to be submerged in brake fluid already.
- Top off reservoir with new fluid. Leave the reservoir cap off and open up the bleeder screws at both front driver and front passenger side. 1/4 turn is enough unless you see nothing flowing then you need to take out the bleeder screw completely and clean up manually using a pin. Taking out the bleeder screws does not let air in, I know, I've done this.
** at any given time, do not touch the brake pedal **
- Let the fluid flow out slowly, you might think this takes forever, but this is the best bleeding method without introducing any air. Add new fluid into reservoir as you see old flows out into the jars. DO NOT LET THE RESERVOIR RUN DRY. Use a rubber mallet and tap the rear of the caliper, this helps getting additional trapped air bubbles out.
- You will see fluid in the clear hose turn from dark color to golden brown/orange. Close the bleeder screw. Do not over-tighten, but need to be rather snug. The way to tell whether it's completely closed with no leak is to roll up a small piece of paper towel and stick it into the nipple opening of the screw and see if you keep sucking fluid out.
- Move on to the rear wheels, same method. The rear will take a long while, but I let it flow for 30 to 40 minutes.
- Top off reservoir to the max line and close the reservoir cap.
total time is about 45 minutes to 1 hour.