Texas CDL General Knowledge Practice Exam

Question: 1 / 400

During a pre-trip inspection, what should break grease be free of?

Dirt and debris

Oil and gas stains

Water and ice

Oil, grease, or brake fluid

Break grease should be free of oil, grease, or brake fluid because these substances can affect the brake's performance and effectiveness. Dirt and debris can also cause issues, but they are not as harmful as oil, grease, or brake fluid. Oil and gas stains and water and ice should also be avoided, but they are not as critical for the safe operation of the brakes as oil, grease, or brake fluid. Therefore, D is the best and most complete answer.

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