1 Answer:
  • Desmond Ong
    The primary differences between the two include the following: DOT 3 brake fluid will absorb less water than DOT 4 from the air over time, meaning you'll need to have your fluid changed less frequently. DOT 4 brake fluid has higher dry and wet boiling points, making it safer for higher temperatures.
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  • Can I use DOT 4 instead of mineral oil?

    No, mineral oil and DOT brake fluid are different and are NOT compatible.28 Mar 2020
  • Do I need brake fluid or new brakes?

    Soft, Bouncy, or Spongy Brake Pedal

    This is a sign you need a brake fluid change. Low brake fluid will cause air to fill the gaps in your brake line—leading to soft brakes. Spongy brake pedals can be both terrifying and dangerous—especially if you do not get them serviced at the first sign of an issue.
  • What brand of brake fluid does BMW use?

    Any input on this would be great. Thanks. All modern BMWs use DOT-4 brake fluid.4 Sept 2012
  • What happens when brake fluid is too full?

    If the master cylinder is overfilled it will not allow enough room for the brake fluid to expand due to heat expansion. The expanding fluid will cause the calipers to apply creating a residual drag.19 Jul 2016
  • What happens if clutch fluid is low?

    Low clutch fluid can make shifting a struggle. Inadequate fluid levels will not allow the clutch to release properly. This can cause a loud grinding sound when you attempt to shift. It may be tempting to just top-off the clutch fluid, but that may not resolve the issue if there is a leak.27 Nov 2020

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