Exchange of Brake Fluid

[Zombie541]

What do the auto makers say about fluid changes? General Motors and Chrysler do not mention brake fluid in their
scheduled maintenance recommendations. A General Motors spokesman said​

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Delco Supreme 11 DOT 3 brake fluid​

contains additives than many other brake fluids do not, so it is essentially a lifetime fluid. Starting in 1993, GM began
using a new type of rubber brake hose with an EPM lining and outer jacketing that reduces moisture penetration by 50%.​

So GM does not consider fluid contamination to be a significant problem.
Being a GM tech, that is what I went by-others recomennend replacing-But I still think you are a deuche bag.

See my brakes call for that supreme #11 deco fluid and yeah It could be a lifetime fluid......iiiiffff you never had to add or do a damn thing to the brakes the whole life of the truck.. Haha it's lifetime of ur braking system lasts the life of the car, I get it as in the additives don't break down as fast normal fluid, but saying lifetime a joke! What if I replaced my calipers and need to add more brake fluid to my system.... Can I add your standard dot 3 you get from any store or do I have to use the delco? Would I have to completely drained all out delco and swap it to cheaper fluid? Do u think it's safe to add standard to my delco #11?

 

[thomsbrain]

First off-I don't need my brake fluid changed-I'm not a race car driver.
Second off-The cover has never been off the master cylinder-there is no contamination.
Third off-Hate to tell you that the fluid is good for the life of the car.
Yes there are condtions that negate that-but don't be dumb.

Conditions? You mean like, existing in the universe? Of course you need your fluid flushed and bled, though likely not more than every 5 years or so. These are not air-tight systems and they will accumulate water vapor. Also the fluid near the calipers will eventually roast and gum up your calipers, just from the occasional panic stop. In fairness, I guess it depends on how long you want to drive your car. With modern pads and rotors lasting 100,000 miles, I'd say any time you work on the brakes, you should be flushing and bleeding the fluid. At $5 a bottle, why wouldn't you?

 

[jlee]

Conditions? You mean like, existing in the universe? Of course you need your fluid flushed and bled, though likely not more than every 5 years or so. These are not air-tight systems and they will accumulate water vapor. Also the fluid near the calipers will eventually roast and gum up your calipers, just from the occasional panic stop. In fairness, I guess it depends on how long you want to drive your car. With modern pads and rotors lasting 100,000 miles, I'd say any time you work on the brakes, you should be flushing and bleeding the fluid. At $5 a bottle, why wouldn't you?

Maybe for boring cars...

 

[CurrentlyPissed]

First off-I don't need my brake fluid changed-I'm not a race car driver.
Second off-The cover has never been off the master cylinder-there is no contamination.
Third off-Hate to tell you that the fluid is good for the life of the car.
Yes there are condtions that negate that-but don't be dumb.

You don't need to be a race car driver. Moisture builds up over time and breaks the fluid down. All manufactures are recommending it because ABS modules, and various seals are failing from it not being done.

 

[BUTCH1]

First off-I don't need my brake fluid changed-I'm not a race car driver.
Second off-The cover has never been off the master cylinder-there is no contamination.
Third off-Hate to tell you that the fluid is good for the life of the car.
Yes there are condtions that negate that-but don't be dumb.

First off you are WRONG about brake fluid, if you live in a humid area it WILL over time absorb moisture and turn nasty. I flush my own every 3 years and it's brown-colored every time I change it out.

 

[BUTCH1]

Maybe for boring cars...

Jesus, I drive a car that is the definition of "boring", the Malibu, and pads average about 40K between changes. if he's getting 100K on one set he's on the highway a LOT..

 

[BUTCH1]

Dex Cool doesn't cause issues with cooling systems, its just a bunch of FUD being spread around.

Take this one for example, on the first google hit about dexcool:

bought 03 chevy malibu. dexcool cooliant blew seals water pump and created fuel pump issue. bought car in 06. 34000 miles now 78000 and sev. thousands later waiting and wondering when issue be fixed and anti theft issue. car wont start sometimes or turns off while driving! got to turn key when happens, leave on for 10 mins to reset...and never know when its gonna happen, random.

OMG, dexcool created a fuel pump issue. Also causes electrical issues!!!
Dexcool mixes fine with green antifreeze and water, yet people swear its the blob in their engines. I've owned two vehicles with Dexcool, driven them both 65k before selling them, and had ZERO issues. none, zip nada. If dex cool was the engine eating monster people are claiming it is, I'd have had issues in those 65k miles on either or both engines.

Actually there was a problem with Dex-cool but it was brought about by owner neglect. People were going years without checking the coolant and if it gets low enough and mixes with a lot of air it can get gummy. IDK if Dex-cool was implicated in the LIM gasket's that GM had so many issues with, IMO it was just a shitty gasket design.