Survey by Qualaroo
+ Reply to Thread
Results 1 to 8 of 8

Thread: GLI Brake Fluid?

  1. #1
    Senior PakWheeler Follow
    AkbarGr8's Avatar
    Join Date
    Oct 2004
    Location
    Karachi
    Age
    32
    Posts
    5,972
    Follows
    0
    Following
    0
    Mentioned
    8 Post(s)
    Tagged
    1 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default GLI Brake Fluid?

    Hello every one, a friend of mine owns a Toyota Corolla GLI(new shape). He's changing his brake fluid, but is only getting DOT4 from the market instead of DOT3. So it is safe to use DOT4 instead of DOT3?. your comments in this matter are highly appreciated!
    Bees waal 4 life

  2. #2
    Senior PakWheeler Follow
    AkbarGr8's Avatar
    Join Date
    Oct 2004
    Location
    Karachi
    Age
    32
    Posts
    5,972
    Follows
    0
    Following
    0
    Mentioned
    8 Post(s)
    Tagged
    1 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    No one ?
    Bees waal 4 life

  3. #3
    Senior PakWheeler Follow
    Racerf1's Avatar
    Join Date
    Aug 2005
    Location
    Select City
    Age
    2
    Posts
    14,753
    Follows
    0
    Following
    0
    Mentioned
    33 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    DOT 2 DOT 3 DOT 4 DOT 5
    Dry Boiling point 374 401 446 500
    Wet boiling point 284 311 356

    Temps are in Fahrenheit.

    The DOT 2 spec is for drum brakes and is obsolete. If you have any DOT 2 in your garage, throw it away! DOT 5 is for silicone brake fluid. Silicone brake fluid (DOT 5) should be avoided because it is not compatible with regular brake fluid, it is hard to pour without introducing bubbles and thus results in soft pedal feel, and moisture still gets into your system and will pool in low areas like your calipers and encourage rapid corrosion. STAY AWAY! DOT 5 is not recommended unless the brake system is designed for it.

    That leaves DOT 3 and DOT 4 fluids. These fluids are compatible with each other and may be interchanged or mixed with no ill effects
    "The value of life can be measured by how many times your soul has been deeply stirred." Soichiro Honda

  4. #4
    Senior PakWheeler Follow
    SER_GTR's Avatar
    Join Date
    Nov 2005
    Location
    Karachi
    Age
    30
    Posts
    9,737
    Follows
    16
    Following
    0
    Mentioned
    490 Post(s)
    Tagged
    19 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    3

    Default

    Hello!
    using DOT 3 is better than all............!
    Seikan Brake Fluid is what i used and works fine..........!
    Thanxxx
    TOYOTA Sprinter 86- AE80 DOHC 20v'D TOYOTA Corolla 98- AE101 4AFE 16v

  5. #5
    Senior PakWheeler Follow
    szuberi's Avatar
    Join Date
    Mar 2005
    Location
    Toronto
    Age
    41
    Posts
    3,576
    Follows
    1
    Following
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    there is absolutely no need to mix the dot3 and dot4 fluids together...use either one of them and you should be fine.
    I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it..and so restriction of free thought and free speech is the most dangerous of all subversions.

  6. #6
    Senior PakWheeler Follow
    bilal49er's Avatar
    Join Date
    Jan 2005
    Location
    Hyderabad
    Age
    40
    Posts
    1,542
    Follows
    0
    Following
    0
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    1

    Default

    @szuberi
    by mixing dot 3 and 4 racerF1 means u can add dot 4 to existing dot 3 in the system and vice versa. it doesnt mean we mix both befre pouring in!
    sent from my HD2 without using the handset itself!!

  7. #7
    Senior PakWheeler Follow
    szuberi's Avatar
    Join Date
    Mar 2005
    Location
    Toronto
    Age
    41
    Posts
    3,576
    Follows
    1
    Following
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    ok thanks bilal for the clarification....thats why i was wondering..why mix beforehand...i get it now. i know racer knows his **** more than anyone else..haha
    I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it..and so restriction of free thought and free speech is the most dangerous of all subversions.

  8. #8
    Senior PakWheeler Follow
    Racerf1's Avatar
    Join Date
    Aug 2005
    Location
    Select City
    Age
    2
    Posts
    14,753
    Follows
    0
    Following
    0
    Mentioned
    33 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    @Bilal
    thanks for the clarification


    Again, If you have DOT 3 use that but if not DOT 4 would do coz they are compatible , unlike DOT 5 which does not mix due to it being Silicon based unlike DOT 3 which is a mixture of glycols and glycol ethers. DOT 4 contains borate esters in addition to what is contained in DOT 3. and hence this makes them compatible.

    But I recommend to change the whole fluid rather then mix. And do remember to bleed your brake system with new fluid at least every year. As any fluid absorbs moisture over time and this reduces the boiling point and water as we all know has a boiling point of 212 F. An example is DOT 3 fluid with 3% water content would still exhibit a boiling point of 300F. However if water got into the system, and a big globule found its way into a caliper, the water would start to boil at 212F causing a vapor lock condition and possible brake failure.
    "The value of life can be measured by how many times your soul has been deeply stirred." Soichiro Honda

+ Reply to Thread

User Tag List

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •