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Honda CR-V General Discussions General discussions on the 3rd generation Honda CR-V.

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Old 06-04-2010, 01:18 PM
wolfwoman wolfwoman is offline
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Default Replacing brake fluid in 2007 CR-V

I read the manual when I purchased my 2007 CR-V, and have referred to it from time to time. I read that the brake fluid needs to be replaced every three years. Can someone tell me why when I only have 11,000 miles on my car?
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Old 06-04-2010, 02:01 PM
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It's because brake fluid is Hygroscopic (not a spelling error). It absorbs moisture out of the air, and over time this is a bad thing.

In extreme cases, it will cause internal corrosion to expensive parts such as the master cylinder, ABS pump, and brake calipers.

In the worst possible case, it can cause you to wreck. How? Because the water content gets to such a high percentage that in an emergency stop the hot brake caliper causes the water to boil. Brake fluid is incompressible (which is why we use it), but steam compresses quite well. Which means you no longer have as much braking force as you'd like, causing you to run into the vehicle or object in front of you.

So you want to change the fluid at least every 3 years, no matter how many miles you put on your vehicle. If you live on the coast, every 2 years wouldn't be a terrible thing to do.

This info also applies to motorcycles and mountain bikes, BTW. Any vehicle that uses DOT brake fluid.

Chip H.
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Old 06-04-2010, 03:32 PM
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Thanks. I had mentioned I was having this work done tomorrow and I got replies like "I have never had to replace brake fluid after 3 years", etc., so I started second guessing. I knew someone on this board was more knowledgeable, so I knew I'd get some info. on exactly WHY.
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Old 06-04-2010, 05:56 PM
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Here, people are used to changing brake fluid on a routine basis. We get people in the shop all the time asking for a brake flush. Salt air, mountain driving, etc. are tough on brakes.

Now, from someone in the car business - do it. When the little bits of water that seep in past the seals begins to actually accumulate, you end up corroding your brake lines from the inside out. You can't see it happening. You only know it has happened when the day comes that you press on the brake pedal and it goes straight to the floor from a line rupture.

Mechanics can't see this happening when you take your car in for brakes and various checks. They can only observe outer line corrosion, which takes much longer and is easy to detect.

At work, we test brake fluid for copper (detects corrosion) and water contamination with test strips from BG Chemical. (We use their power brake fluid flush systems).

The 99 I had bought here was one of the worst I had seen even though my eyes thought it was still good fluid. I changed it and the clutch fluid immediately.

Don't try to be cheap on your brakes. It isn't worth it.
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Old 06-05-2010, 04:13 AM
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Thanks for the reply. I am keeping my appointment as planned. It's in the manual for a reason. And with only 11,000 miles on my 2007, I'm sure at least two techs will come out, like they usually do, and tell me to let them know when I go to sell the car!
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Old 07-11-2010, 08:45 PM
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Regardless of mileage you will want to change it. My fluid had so much rust in it, I am a complete nonbeliever now in the Honda fluid. I have never had a car in 30 years that had as bad looking brake fluid as the CRV did. With lots of flushing, I used about 4 quarts of Castrol GTA fully synthetic dot 4. The brake feel is better than it was new.
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Old 07-13-2010, 01:48 PM
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Smile Brake fluid

For the Diy try www.brakebleeder.com from Phoenix Systems. It's seams like a good tool when your bleeding the brakes on your car alone which most of us are half the time when were working on them.
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Old 07-14-2010, 04:07 AM
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Quote:
Originally Posted by 66COUP View Post
Regardless of mileage you will want to change it. My fluid had so much rust in it, I am a complete nonbeliever now in the Honda fluid. I have never had a car in 30 years that had as bad looking brake fluid as the CRV did. With lots of flushing, I used about 4 quarts of Castrol GTA fully synthetic dot 4. The brake feel is better than it was new.
Honda brake fluid is no different than standard DOT 3, they just put their label on it.
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