Practice question

What type of fluid is specifically formulated to be used in automotive hydraulic brake systems?

  1. SAE 90 Gear oil
  2. Automatic transmission fluid (ATF)
  3. Glycol-ether based brake fluid (such as DOT 3 or DOT 4)
  4. Distilled water mixed with anti-freeze

Answer: C — Glycol-ether based brake fluid (such as DOT 3 or DOT 4)

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