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Thread: Brake Fluid Drain/Fill, Mazda dealer says NO

  1. #31
    Gen-1 Kodo Design 👌 ColoradoDriver's Avatar
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    Quote Originally Posted by mac.mc78 View Post
    I just had my first service at my dealer (car only has 9000km on it), and it blew me away when I asked the guy to have them check my transmission fluid level because several people here on this forum reported lower-than-normal levels in their transmissions.

    I was told "its a sealed unit, there is no dipstick".. For which I know he's either 1) Misinfomred or 2) Lying because they didn't want to check it.

    THe whole experience was lacklustre. NO "how's the new car!" no "Enjoying the car?, anything to report?" nothing. Just... ^ that.

    I'll do one more oil change there, then I'm out.
    God I have seen that myth perpetuated so much. I believed it for the longest time myself before I read up on people doing drain/fills on this forum.
    2014 CX-5 Touring AWD 2.5L | Jet Black Mica - 85k miles
    01/2013 build | 4/20/2013 delivery

  2. #32
    Registered Member ralf11's Avatar


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    Quote Originally Posted by erhayes View Post
    The CX5 has a rubber seal that protects the BF against absorbing air by moving down as the brake fluid goes down in the reservoir. I think the old days of flushing brake fluid every two years or 24K miles is gone. Just check the reservoir for fluid level (don't open to atmosphere and disturb the rubber diaphragm seal) and change the fluid when doing a pad change. Ed
    where is the seal located?

    how is expansion of brake fluid handled?

  3. #33
    Registered Member yrwei52's Avatar
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    Arrow Brake Fluid Drain/Fill, Mazda dealer says NO

    Quote Originally Posted by erhayes View Post
    The CX5 has a rubber seal that protects the BF against absorbing air by moving down as the brake fluid goes down in the reservoir. I think the old days of flushing brake fluid every two years or 24K miles is gone. Just check the reservoir for fluid level (don't open to atmosphere and disturb the rubber diaphragm seal) and change the fluid when doing a pad change. Ed
    The brake fluid reservoir on my previous 1974 Chevrolet Impala has a rubber cap seal to protect the brake fluid. The thing is the 2-year brake fluid replacement is a standard maintenance schedule for Mazda CX-5 in other countries, but NOT in the US. Most Euro vehicles sold in the US also have 2-year brake fluid replacement schedule.

  4. #34
    Registered Member yrwei52's Avatar
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    Arrow Brake Fluid Drain/Fill, Mazda dealer says NO

    Quote Originally Posted by ralf11 View Post
    where is the seal located?

    how is expansion of brake fluid handled?
    In very old days such as my 1974 Chevy Impala the rubber cap seal is a whole piece to cover iron brake fluid reservoir which has two round-cylinder flexible "bubble" to handle brake fluid expansion and contraction. For newer plastic brake fluid reservoir there should be a small vent hole on cap.

  5. #35
    Registered Member Anchorman's Avatar

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    Quote Originally Posted by ralf11 View Post
    where is the seal located?

    how is expansion of brake fluid handled?
    Unless the reservoir is different than the Euro one there isnít one. (and while I didnít specifically look, I didnít notice anything when I was noseying at a rental). I can only think Ed is mistaken.
    Attached Files Attached Files

  6. #36
    Registered Member Conrad 16.5's Avatar

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    Quote Originally Posted by yrwei52 View Post
    in very old days such as my 1974 chevy impala the rubber cap seal is a whole piece to cover iron brake fluid reservoir which has two round-cylinder flexible "bellows" to handle brake fluid expansion and contraction. For newer plastic brake fluid reservoir there should be a small vent hole on cap.

    fify
    "Don't bother me with facts, Son. I've already made up my mind." -Foghorn Leghorn

  7. #37
    Registered Member yrwei52's Avatar
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    Arrow Brake Fluid Drain/Fill, Mazda dealer says NO

    Quote Originally Posted by Conrad 16.5 View Post
    Quote Originally Posted by yrwei52 View Post
    In very old days such as my 1974 Chevy Impala the rubber cap seal is a whole piece to cover iron brake fluid reservoir which has two round-cylinder flexible "bellows" to handle brake fluid expansion and contraction. For newer plastic brake fluid reservoir there should be a small vent hole on cap.
    fify
    Thank you!

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