FYI. Never reuse a previously opened bottle of brake fluid. It absorbs moisture from the atmosphere and you want to keep as much moisture out of the system as possible.
If you buy the one larger bottle of brake fluid you will have more than you need.
I would also recommend buying a vacuum bleeder. They can be had at any parts store for 20 or so bucks. Makes life very easy to bleed them especially when replacing calipers or a brake line where you always introduce tons of air into the system.
Moisture = spongy brakes
Air = brakes possible locking up due to heat expanding the air and pushing the caliper pistons out, thus causing brakes to drag or even lock up.
Best to play it safe and make sure you have bleed everything out so that you have nice new clean fluid throughout the system.
I have seen a more than a couple of people just think its ok to bleed them out once or twice and not see any air bubbles and seal it up and drive. Most of the time that wouldn't cause a problem but if it does your in for a ****ty day.
Also, even if you bleed it with a vacuum bleeder it's always best to go ahead and bleed it the old fashioned way a few times afterwards just to make sure everything is correct and no air got trapped somewhere in the caliper or a brake line.
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