should i flush my fluid with my brake pistons looking like this

 

were you metal on metal? looks like it got pretty hot. If you replace the caliper pretty much any fluid that was boiled will be in the caliper still. Replace it and bleed the system and you should be fine. I wouldnt recomend a flush without dealer tools. If you accidently get air in the ABS you will not be able to get it out so pay attention to the fluid level while bleeding.

 

no metal to metal i have about 25% life left. Do you think i boiled it oh and both sides are the same way

 

ya... after you replace your calipers... then you should bleed your entire system.

actually... you should probably bleed BEFORE you change your calipers in case you have any pieces of the piston in the line... how did you shatter the piston??????

if you wait till after to bleed you might push some metal pieces into the new calipers and then trash the seals.

So bleed before, and bleed again after...

 

The brakes should be flushed at least every 2 years to protect all those expensive ABS components. Flushing wouldn't have prevented that damage. That's full on neglect, time for new calipers.

 

i have no clue, i change my brakes around 10k and the were great now im at 15 and i was getting a shake so i wanted to check it out.

i did change the fluid to super blue race fluid, painted calipers and drill and slotted rotors, and i drive it like its a cop car all are prob reasons why

 

holy cow!

 

you went from new brakes to that in 5,000? WOW

 

Exactly what I was thinking. Something was not right when you put them back together.

 

Brake fluid is hygroscopic, which means it absorbs water. Over the course of 2 years, Brake fluid turns to crap. Boiling only happens under extreme braking when the transfer of heat from the pads to the calipers causes the water to boil, resulting in a gas. You can compress a gas, you can't compress a fluid. With the pedal depressed you will loose pedal because the gas is being compressed instead of fluid being forced down to press against the piston.

Have I lost you yet? No? Good, read on...

What happens more often than not with calipers is the water and assorted other crap settles at the lowest point in the system, normally the calipers, and causes them to bind or seize.

Go get a friend, some brake fluid, a glass jar, some clear tubing to slide over the bleeder, and bleed a little fluid out of each caliper.
You'll puke when you see what comes out.

Very few car have a service interval for brake fluid change. Some of the high end ones do, my Porsche does have one, I forget what it is.

Motorcycles almost always have a 2 year replacement interval for brake fluid. My street bikes get the fluid changed every 2 years with a bleed in the off year just to keep the calipers from going bad.

 

Jesus, seeing that makes me want to start maintaining my brakes!

 

X2 on Neggy and his very sound advice....and DUDE....run, don't walk, run and buy yourself a new (NEW) new set of 4 calipers. Yours are dead and deserved to be buried. Seriously. The safety factor is to great to be ignored. Get new ones.

 

i just got done installing the new ones today with yellow stuff brakes there is still a little grinding sound but almost like its not there should that go away? when the brake is depressed it goes away then comes back. is this the wear in period for the brakes

 

your know that its hygroscopic but yet you suggest that the water "settles" to the calipers??? Any water in the system will be absorbed into the brake fluid and be pretty much evenly distributed.

And no, brake fluid won't turn to "crap" in two years time... if you drive your truck under normal conditions... If you live in the mountains or tow heavy trailers all the time, or just beat on your brakes like you are in a Nascar race... then maybe you should bleed the system every two years.

But if you are a normal driver then it will be fine.

And I understand that your motorcycle and sportscar call for frequent changes... but they expect you to be really hard on the brakes and that is why they specify the changes.

 

It's just like coolant... it doesn't go bad as long as it don't get contaminated.

The brake system is a sealed system as well. It's actually well sealed just as the radiator system.