Practice question

White, crusty buildup on a school bus battery terminal is most commonly:

  1. Lead sulfate/sulfation corrosion from electrolyte vapor
  2. Hardened grease
  3. Aluminum oxide from the cable
  4. Dried coolant

Answer: A — Lead sulfate/sulfation corrosion from electrolyte vapor

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Practice more: ASE S6 Electrical Electronic Systems (School Bus) Practice Questions - ASE S6 - Electrical Electronic Systems (School Bus) Certification Exam →