Practice question

A school bus diesel cooling system uses a coolant filter with supplemental coolant additive. If the SCA level becomes too low, the MOST likely consequence is:

  1. Improved heater performance
  2. Cylinder liner cavitation erosion and internal corrosion
  3. Faster turbo spool-up
  4. Lower oil consumption

Answer: B — Cylinder liner cavitation erosion and internal corrosion

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

Practice more: ASE S2 Diesel Engines (School Bus) Practice Questions - ASE S2 - Diesel Engines (School Bus) Certification Exam →