Title: Check and refill diesel exhaust fluid (DEF).
Course: Automotive Technology II (20104-II) > Section: Engine Performance: Fuel, Air Induction, and Exhaust Systems

Procedure should require following manufacturer’s recommendations and servicing at regular/recommended intervals.

Process/Skill Questions:

- How is the quality of diesel fuel determined?
- Why is diesel fuel quality important?
- How does diesel fuel quality affect performance?