Dan Wang

I would change the fluid based upon time, not mileage. Brake fluid is hydroscopic, therefore over time, it absorbs water. This in turn lowers the boiling point of the brake fluid.

I, personally, would change the brake fluid 1-2 years depending on climate.

kkanuck

I too just bought this pressure bleeder to to this DIY and have a quick question...

When you drain and top off the Master cylinder, do you fill it to the top of the thread right before it overflows seeing as you will be using lots of fluid?

How much fluid at a time do you put in the pressure bleeder tank before you pressurize it?

Any air left in the bleeder tank, its hose, and the top of the master cylinder (before you screw the mercedes adapter on and pressurize), will there be air pushed into the lines as a result and is that a problem?


Thanks for any insight,


Cheers


Tibor

vettdvr

Hope this helps.

kkanuck

Thank you very much!

kkanuck

How much does brake fluid in an unopened bottle from Germany absorb water if the date on the bottle is 1-2 years old but never opened?


Cheers,

starbrite

Interesting read from the AMG forum : https://mbworld.org/forums/w211-amg/...id-change.html

@kkanuck, barely, if at all, if the bottle has stayed sealed.

noyu

Sorry for the mini hijack:

I have a mityvac 7201 for DIY oil change and also have the 7205 brake bleed kit, my question is can I use the mityvac along with the bleed kit to flush my brake system I have a 07 E550 4M (no SBC).

I did search the forum but can"t find a definite answer on whether I can use the vacuum menthod to suck the brake fluid or have to use the pressure method like the Motive brake bleeder.

Also, if using pressurized bleeder what PSI should the bleeder not exceed to prevent damage to the brake system?

Thx

ohlord

is Pressure although vac will do as long as you activate the abs at some point during the fluid change(i.e. fill res and drive the car activate the abs)then continue with the flush/bleed.

Benzo 003

You can use the vacuum method, but I would shy away. You have a chance of drawing too much too quick and run the master cylinder dry.
I have used Mityvacs on other vehicles, I greatly prefer this method.

I flushed my ML with the Motive Power Bleeder....it truley was effortless. I pumped mine up to 10 on the guage and that was sufficient for all four wheels. I only used a little less than 1 liter. I emptied the master cylinder, topped it off, hooked up the bleeder and opened the screws one at a time.
It was a very clean and easy job.

The unopened bottle should be good regardless of how old it is...it's still factory sealed.

noyu

Thank you ohlord and Benzo for your informative post.

Looks like it the Motive bleeder is a way to go.

Is the motive bleeder you guys using is the model #0100 for european cars?

Is 45mm thread the correct one for our MB?

When using the motive bleeder do I can to worry about cycling the ABS system like ohlord said?

Thanks again and wish you all have a happy new year!

Cheers

vettdvr

Mercedes Benz 0109/0100**/0101* 1109/1100**/1101*

Yuille36

Your brake fluid needs changed every two years regardless of your mileage, as brake fluid is hydroscopic meaning it collects moisture. That moisture collects insid reht brake lines and caliper pistons, causing corrosion. i.e. rusty brake pistons inside the calipers, possible rust in the master cylinder.

Benzo 003

Noyu,

I have the red anodized metal cap, not sure on the part number. It was for the M/B Euro models.
I did not do anything with the ABS. I simply opened the bleeder screws and waited for the color change. I used ATE Super Blue Racing fluid. It is a very bright "Neon" blue. It is obvious when the new fluid is flushed through.
Next year, Super Gold.

Yuille36

I use the same type of Brake Fluid, ATE Super Blue Racing Fluid. it make a big difference when bleeding brake as you can see the diffrence between the old and new fluid.

gnma

I would love to DIY the brake fluid. However I'm concerned that MB recommends the use of STAR when bleeding the system, and by DIY without STAR, should there be a problem with the brakes (like those here who have exp. the SBC failure claim there is VERY LITTLE stopping force), can MB void the 10 yr. SBC warranty?

vettdvr

Not flushing can void the warranty.

I flushed my SBC brakes w/Motive pressure bleeder @ 10PSI and have a clean system.

Each owner has to make a decision if this is something you can / should do or pay the dealer. Your choice.

Long Islander

I've used ATE Type 200 gold in other cars. The specs are as follows:
dry boiling point 536 degrees F dry, wet 392 degrees F
(Celcius: 280/200).

Someone who has a bottle of the M-B branded brake fluid can check these against those of the M-B fluid.