Practice question

Why must a technician verify proper coolant freeze protection before cold-weather school bus operation?

  1. Freeze protection reduces heat output
  2. Freeze protection only matters for color
  3. Plain water never freezes in an engine
  4. Insufficient antifreeze concentration can let coolant freeze, cracking heater cores, the block, or hoses

Answer: D — Insufficient antifreeze concentration can let coolant freeze, cracking heater cores, the block, or hoses

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: ASE S1 Body Systems & Special Equipment (School Bus) Practice Questions - ASE S1 - Body Systems & Special Equipment (School Bus) Certification Exam →